318 build up

on my last post i was considering either a 340 or a 440 and got some suggestions to just build up my 318 for now. i have a stock 1974 2 brl 318. i have headers and a set of 302 heads to put on it. from what i am told those 302 heads should bring my compression ratio up over 9 to 1. i was wondering what intake and carb works best with these heads. i also wanted to know what you guys thought i should go with for a cam. i was looking at xtream energy 454 lift 268 duration. can i go bigger do you think or is that about the limit for this combination.