Interesting proposal, but it's not the 60/40 race/street motor you described in your first post. This is basically a race motor, and if you put that type of cam in it, your power band is going to be in the 4000 - 7000 RPM range. You can probably rump-rump around the drive-in, but "streetable?" Nope.

For your compression ratio and other parts, something like a comp cams 306BR10 fits what you asked for. Mechanical roller, bracket race, 12:1 in a heavy car. 270/280 @ .050 lift, .710/.714 lift, 110 lobe centers. Note that I said "what you asked for." What you asked for ain't a street motor.