With some redesign work I think I can do the AFFS using the 120, 180, 200, 240 and 300 standard fusion engines.
The amended designs are
here.
120 SFE: J. Edgar II light hover tank, Heavy APC II (a whole family of variants for utility roles), Hawk Moth II VTOL (again, a whole range of variants possible on this chassis), Stinger light scout 'Mech, Wasp light scout 'Mech
180 SFE: LRM Carrier, SRM Carrier (and possibly a Sniper artillery carrier on the same chassis), Goblin II medium tank, Striker II medium missile tank, Pegasus II medium hover tank, Scorpion II light tank, Javelin light scout 'Mech, Valkyrie II light fire support 'Mech, Blackjack air defense 'Mech
200 SFE: Corsair superiority aerospace fighter, Behemoth II assault tank, Dervish II medium fire support 'Mech, Enforcer medium shock 'Mech, Centurion general purpose 'Mech
240 SFE: Sparrowhawk interceptor aerospace fighter, Partisan air defense tank, Manticore heavy tank, Rifleman heavy fire support 'mech, Longbow II assault fire support 'Mech
300 SFE: Stuka attack aerospace fighter, Phoenix Hawk II medium scout 'Mech, Marauder heavy shock 'Mech, Atlas assault shock 'Mech
So 3 aerospace fighters, 13 battlemechs, 11+ combat vehicles off five engines