Will my 360 cast crank, cast piston……

How good of a tuner are you? And what fuel (octane) will you run? That will determine how long it lives. The crank will be fine. The cast pistons with factory ring gaps will die quickly if you get even a hint of detonation. If you add ring gap, and are careful (conservative) with your tune up it can be ok up to about 10 pounds, maybe 12, with the timing right and enough octane. But I wouldn’t push it much more than that.