[DonRotolo]

You'll need to more clearly define "Quick exhaust valve". If you mean to use the type mentioned in <R72 B> then it appears you CAN use such a valve to allow pneumatic pressure in to or out of your cylinder. You'll need some way to turn that valve that does not violate <R73 B>.

If you mean something else, then explain more please. Ideally a manufacturer and part number.

It may be worth noting that air volume is only one of the constraints you are battling. In other words, getting a lot of air in to a cylinder fast might not make it move as fast as you might like.

Oh, yes: This is my opinion only. My opinion will be completely worthless at any Competition. To get a decisive answer, ask at the official FIRST Q&A. Word of warning: ask your question very carefully, thoroughly and precisely so it cannot be misinterpreted.