Say your goal is about 600 hp, a 300 NA engine with about 15 psi of boost would get you there or a 400 hp NA with 7.5 psi of boost etc..
So you don't need much NA power to get decent boost output, so you could run a fairly mild cam to keep streetability especially if you plan on a lot of boost, but say your going for 5-10 psi of boost that's like 1.33 to 1.66 x NA power so say 425 hp x 1.33 to 1.66 = 565 to 705 hp.
Need more details about those heads but I imagine were talking 225 to 245 degree cam depending on NA, Boost amount (psi) and Boosted power goals.