SBP to LBP conversion

Did a bit more searching, thanks to this forum. I am leaning toward Dr. Diff 11" front discs LBP a pair of LBP axles. (perhaps power brake booster and rear discs)
Goal for 67 Cuda notchback- goofing off driver/hotrod decent 273 (maybe upgrade to a larger smallblock for perhaps 400 HP).
Should I go 4 wheel power disc brakes?
Should I stick with manual front disc brakes and rear drums?