I’d go with HKS 272’s/FP2’s/BC 272’s, etc etc over a 264 cam.
The stock 1G MAS is garbage. The 2G MAS will flow ~58lbs/min, stock. Hack it and run more. The EVO MAS flows a bit more I think. Or go with a GM.
As for fuel, people have made that kind of power on a single 255, but I’d go with a second, either in tank or in line, just to be safe.