An entire cluster would demand a rather large dropship - the Overlord-C can pack three 'Mech trinaries but you probably want to cram 30 fighters and at least 2 Elemental Trinaries aboard.
My recommendation there would be to break it into a pair of designs: one carrying 15 Mechs and 75 Elementals, one carrying 30 aerospace fighters. Three of the former and one of the latter allows space for an aerospace trinary and three supernova trinaries (or 2 supernova trinaries, 1 'Mech trinary and enough room for 75 support staff) - respectable for a frontline cluster and four dropships is the full load on an Odyssey-class jumpship which, with their Lithium-Fusion batteries, are probably solid choices for moving around military forces.
The Overlord frame would allow plenty of space over and above the cargo to pack in capital missile launchers and/or subcapital weapons.
AeroTech 2 Vessel Technical Readout
Class/Model/Name: Overlord-GS-M
Tech: Clan / 3015
Vessel Type: Spheroid DropShip
Rules: Level 2, Standard design
Mass: 11,600 tons
Length: 101 meters
Power Plant: Standard
Safe Thrust: 3
Maximum Thrust: 5
Armor Type: Standard
Armament:
14 ER PPC
5 Killer Whale
2 Large Pulse Laser
4 Medium Pulse Laser
60 LRM 20+Artemis IV
Class/Model/Name: Overlord-GS-M
Mass: 11,600 tons
Equipment: Mass
Power Plant: Standard 2,123.00
Structural Integrity: 18 2,123.00
Landing Gear: 116,000
Safe Thrust: 3 116,000
Maximum Thrust: 5 116,000
Heat Sinks: 353 Double 233.00
Fuel & Fuel Pumps: 360.00
Bridge & Controls: 87.00
Fire Control Computers: 72.00
Food & Water: (44 days supply) 32.50
Armor Factor: 1,200 Standard 56.50
Armor Value
(Standard Scale)
Fore: 350
Left / Right Sides: 300 / 300
Aft: 250
Equipment & Options:
Cargo:
Bay 1: BattleMechs (15) with 3 doors 2,250.00
Cargo (1) 1,015.00
Life Boats: 3 (7 tons each) 21
Escape Pods: 3 (7 tons each) 21
Crew and Passengers:
8 Officers (7 minimum) 0.00
15 Crew (0 minimum) 0.00
20 Gunners (19 minimum) 0.00
75 Marine Battle Armor Troopers/Elementals 0.00
30 Bay Personnel 0.00
Weapons & Equipment: Loc SRV MRV LRM ERV Heat Mass
2 ER PPC Nose 3(30) 3(30) 3(30) -- 30 12.00
3 Killer Whale(30 msls) Nose 12 12 12 12 60 1,950.00
2 ER PPC Nose 3(30) 3(30) 3(30) -- 30 12.00
2 ER PPC FL/R 3(30) 3(30) 3(30) -- 60 24.00
1 Large Pulse Laser FL/R 2(24) 2(24) 1(10) -- 20 12.00
1 Large Pulse Laser 16 8.00
3 LRM 20+Artemis IV(60 rounds) FL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) FL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) FL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) FL/R 5(48) 5(48) 5(48) -- 36 56.00
1 Killer Whale(10 msls) FL/R 4 4 4 4 40 1,300.00
3 LRM 20+Artemis IV(60 rounds) AL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) AL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) AL/R 5(48) 5(48) 5(48) -- 36 56.00
2 ER PPC AL/R 3(30) 3(30) 3(30) -- 60 24.00
3 LRM 20+Artemis IV(60 rounds) AL/R 5(48) 5(48) 5(48) -- 36 56.00
2 ER PPC Aft 3(30) 3(30) 3(30) -- 30 12.00
3 LRM 20+Artemis IV(60 rounds) Aft 5(48) 5(48) 5(48) -- 18 28.00
3 LRM 20+Artemis IV(60 rounds) Aft 5(48) 5(48) 5(48) -- 18 28.00
3 LRM 20+Artemis IV(60 rounds) Aft 5(48) 5(48) 5(48) -- 18 28.00
3 LRM 20+Artemis IV(60 rounds) Aft 5(48) 5(48) 5(48) -- 18 28.00
1 Lot Spare Parts (1.20%) 139.00
TOTALS: 706 11,600.00
Tons Left: .00
Calculated Factors:
Total Cost: 1,354,484,320 C-Bills
Battle Value: 29,366
Cost per BV: 46,124.24
Weapon Value: 17,939 (Ratio = .61)
Damage Factors: SRDmg = 1,304; MRDmg = 1,072; LRDmg = 479; ERDmg = 58
Maintenance Point Value: MPV = 80,784 (44,986 Structure, 11,646 Life Support, 24,152 Weapons)
Support Points: SP = 96,075 (119% of MPV)
BattleForce2: MP: 3N, Armor/Structure: 20 / 20
Damage PB/M/L: 51/51/50, Overheat: 0
Class: DL, Point Value: 294
Specials:sph, if
AeroTech 2 Vessel Technical Readout
Class/Model/Name: Overlord-GS-A
Tech: Clan / 3015
Vessel Type: Spheroid DropShip
Rules: Level 2, Standard design
Mass: 11,600 tons
Length: 101 meters
Power Plant: Standard
Safe Thrust: 3
Maximum Thrust: 5
Armor Type: Standard
Armament:
14 ER PPC
3 Killer Whale
2 Large Pulse Laser
4 Medium Pulse Laser
60 LRM 20+Artemis IV
Class/Model/Name: Overlord-GS-A
Mass: 11,600 tons
Equipment: Mass
Power Plant: Standard 2,123.00
Structural Integrity: 18 2,123.00
Landing Gear: 116,000
Safe Thrust: 3 116,000
Maximum Thrust: 5 116,000
Heat Sinks: 122 Double 2.00
Fuel & Fuel Pumps: 360.00
Bridge & Controls: 87.00
Fire Control Computers: 42.00
Food & Water: (46 days supply) 23.50
Armor Factor: 1,200 Standard 56.50
Armor Value
(Standard Scale)
Fore: 350
Left / Right Sides: 300 / 300
Aft: 250
Equipment & Options:
Cargo:
Bay 1: Fighters (15) with 3 doors 2,250.00
Cargo (1) 430.00
Bay 2: Fighters (15) with 3 doors 2,250.00
Cargo (1) 430.00
Life Boats: 3 (7 tons each) 21
Escape Pods: 3 (7 tons each) 21
Crew and Passengers:
8 Officers (7 minimum) 0.00
15 Crew (0 minimum) 0.00
20 Gunners (17 minimum) 0.00
60 Bay Personnel 0.00
Weapons & Equipment: Loc SRV MRV LRM ERV Heat Mass
2 ER PPC Nose 3(30) 3(30) 3(30) -- 30 12.00
3 Killer Whale(30 msls) Nose 12 12 12 12 60 1,950.00
2 ER PPC Nose 3(30) 3(30) 3(30) -- 30 12.00
2 ER PPC FL/R 3(30) 3(30) 3(30) -- 60 24.00
1 Large Pulse Laser FL/R 2(24) 2(24) 1(10) -- 20 12.00
1 Large Pulse Laser 16 8.00
3 LRM 20+Artemis IV(60 rounds) FL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) FL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) FL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) FL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) AL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) AL/R 5(48) 5(48) 5(48) -- 36 56.00
3 LRM 20+Artemis IV(60 rounds) AL/R 5(48) 5(48) 5(48) -- 36 56.00
2 ER PPC AL/R 3(30) 3(30) 3(30) -- 60 24.00
3 LRM 20+Artemis IV(60 rounds) AL/R 5(48) 5(48) 5(48) -- 36 56.00
2 ER PPC Aft 3(30) 3(30) 3(30) -- 30 12.00
3 LRM 20+Artemis IV(60 rounds) Aft 5(48) 5(48) 5(48) -- 18 28.00
3 LRM 20+Artemis IV(60 rounds) Aft 5(48) 5(48) 5(48) -- 18 28.00
3 LRM 20+Artemis IV(60 rounds) Aft 5(48) 5(48) 5(48) -- 18 28.00
3 LRM 20+Artemis IV(60 rounds) Aft 5(48) 5(48) 5(48) -- 18 28.00
1 Lot Spare Parts (1.20%) 139.00
TOTALS: 666 11,600.00
Tons Left: .00
Calculated Factors:
Total Cost: 1,298,260,320 C-Bills
Battle Value: 13,391
Cost per BV: 96,950.21
Weapon Value: 17,698 (Ratio = 1.32)
Damage Factors: SRDmg = 451; MRDmg = 366; LRDmg = 154; ERDmg = 13
Maintenance Point Value: MPV = 76,152 (47,234 Structure, 9,396 Life Support, 19,522 Weapons)
Support Points: SP = 96,075 (126% of MPV)
BattleForce2: MP: 3N, Armor/Structure: 20 / 20
Damage PB/M/L: 26/26/25, Overheat: 0
Class: DL, Point Value: 134
Specials:sph, if
The GS-A variant could probably do with more heatsinks, but you get the idea.