And why the aluminum rear triangle? That's the first place you'd expect to find carbon on a bike.
As for geo, I never know what to think about the V10. Theoretically it should feel like it has a 12.8" bb, but that sounds far too good to be true.
Is carbon not flexier than alu.? If that's true, alu would be better in the rear triangle because you would retain the stiffness there. Then you can use carbon in the nice big solid front triangle without worrying about stiffness.