318 rebuild for turbocharging

For sure, with a 300-350 HP (at sea level, if I'm lucky) 318 I'd need at least 10 lbs to hit 550, plus a couple on top of that to make up for the lower air density. I'm definitely going with forged pistons that's a no-brainer for me. Another aspect is the cam i'd like to run a roller for longevity but the cost to convert is too much for me.