76 3/4 Cheyenne 350 build

I am new to CF. My name's Floyd, I have a 76 Chevy Cheyenne 3/4 ton pickup it had a stock 454, I am in process of building a 350 4 bolt casting #'s 3870010, I understand it's a good block to build on, has a forged crankshaft was bored .030 over but needs 0.010 more have pistons and rings also Holley 750 double pumper, Edelbrock performer intake, Hooker headers, any suggestions on cam size for around 450 to 475 horse with my setup? Any help would be greatly appreciated. Thanks.