SM 001 Superman
SI 101 Mr.Fantastic
GSX 036 Prof X
IH 017 AIM Renagade x2
Swap out one of the Renegades for 2 Researchers and a Gamma Bomb (nerds gotta have their tech) and you have your theme requirements.
If you don't mind being cheesy, the best way to fix it would be to split the 300pt Superman into 2 of the 150pt Supermen. This gives you your 6 figures needed, plus it gives you two solid attackers instead of the one. 300pt Supes is nice but I don't think him and Chuck could do it alone.