Your plan will work out just fine, and what you're shooting for is a very solid 11 second kind of a street/strip deal.
My '69 GTX is a getting little bit dated but still runs well and is along the same lines.
451ci (400 B engine based, but really close enough to a .055 or .060 over 440 for comparison sake)
10.75:1
RPM heads, minor prep (backcut valves, blended port openings slightly)
PRH/Comp .630/262-266 solid roller
Victor 383 intake prepped at home, 1000/4150 race demon
2" supercomps/mufflers/X pipe exhaust I fabbed in my Dad's driveway
Hello zippy how did those 2in super comp headers fit using your low deck block.... Thanks