That's not to far from my build as mine is a 440/493. You have more cam as I run a solid flat tappet that's 264 & 270 @ .050 with .585 & .592 lift and a 110 LSA and I use Hughes 1.6 rockers and Manton pushrods. I have a bit more comp at 10.6 and I use the basic SEZ head which is about like your heads. I use the Indy dual plane intake and a Holley 850 DP. I never dyno's mine but my 63 has run 10.70's at over 3700 lbs. It seems to come out around 600 hp on some charts at the flywheel. I would guess your build in the 575 to 625 hp range at the flywheel. Good luck , Ron