Quote:

Is there a ratio between the two that works best?



"Dynamic Compression" is just a description of re-calculating the compression ratio from the point where the intake valve closes.
The assumption is that at low engine RPM, like cranking, the intake valve will close at a point after BDC "trapping" the standard atmospheric pressure, and then compress the trapped air (with no losses) to estimate the cranking cylinder pressure.
Usually if the calculated cranking pressure is around 160 psi on run on pump gas. Below 160 psi, usually means you are leaving power on the table by not having enough static compression. Above 160 psi is still doable on pump gas, but you would want a good quench chamber and aluminum heads.
This is just a rough guide, as there are many variables that determine what octane level a specific engine will need.

This is the Victory Library tech article on this:
http://victorylibrary.com/tech/cam-c.htm