Head selection help

[SS Shaun]

Ok guys and gals, I've had lots of time to think since I've been working 60 to 80 hours a week. I am thinking about my 454 and I was going to just tear it down and rebuild it but the motor is not hurt and I am not looking to get super high numbers out of it. All I want is close to 400 hp and 400tq. So I figured with the dome pistons I have plus open camber heads my compression is going to be very low. Like 7.75-8:1. So I need a little help picking some heads. I figure the smaller the combustion chamber the better because it will bump my compression up some. Am I right about that? My cam specs is
Cam Style Hydraulic flat tappet
Basic Operating RPM Range 1,700-5,200
Intake Duration at 050 inch Lift 218
Exhaust Duration at 050 inch Lift 228
Duration at 050 inch Lift 218 int./228 exh.
Advertised Intake Duration 276
Advertised Exhaust Duration 286
Advertised Duration 276 int./286 exh.
Intake Valve Lift with Factory Rocker Arm Ratio 0.500 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio 0.500 in.
Valve Lift with Factory Rocker Arm Ratio 0.500 int./0.500 exh.
Lobe Separation (degrees) 114

with 1.7 rockers with these pistons that are currently in the block
So what do you think?