Compression VS. Octane

It sounds like a Dynamic compression ratio of 9.0-1 would keep me in the ballpark for pump gas with my shinney new BBD 2 barrel. I could go on a play with the distributor advance curve as free time or 'ping' urgency dictates?

With the needed measurements confirmed on my slant, I could then ask the machine shop to mill the head to a target cc for the desired Dcr.

Yes?