They are probably some good choices. However if you can get some flow numbers for the cylinder heads. I would get those and give as much information to a cam rep as you can. They should have a pretty good reccomendation. I'm building a 347 and called Comp Cams. They're suggestion for mine was a Nitrous HP cam. Funny thing is I'm not running any nitrous

just gave'em my combo (from filter to diff gear and electronics) and told them 450+ hp with a set of AFR 185 cc heads. On paper things seem to be working out so far. Can't wait in another month or so I'll have the engine finished and just about ready to fire up. I'm saving for a Vic 5.0 intake (need to add a spacer though so that total runner length from valvestem to entry is 14 inches).
BTW anybody know someone in Virginia that can dyno an EFI engine? (not chasis dyno but engine dyno).