On my recomendation some buddies used the 474 on their control line fast combat models a few years back. The 474 was fast and highly resistant to stalling.

I've seen a lot of the RC scale combat models that used flat bottom airfoils. From this I gather that more of the flying for this type of model involves pulling positive with little negative G maneuvers? If so then there's a good case to be made for a cambered airfoil of some form. Something like the Eppler 195 or 197. Or that Selig 8035 that is good for higher Cl's.

72 inch span seems like a lot of model for a .32 for scale combat. Or is this an open design flying wing style?