With a STD cam core keep the lift reasonable. You didn't mention a rocker ratio but assume 1.5/1.6. We run a 572 in our Racetech, its been 4.60 here in Las Vegas. Id look similar to what's been posted FWIW here is what we had in ours 115 center, 283/299, .474/.475 with a 1.7 rocker gross lift at 806/808.