How does your engine run now? If OK I'd consider leaving it alone.

The easiest and most effective way to get quench is to use a zero deck piston and a closed chamber head. The piston to had clearnace will be the gasket thickness - use a common .038-.040 gasket and you've got it.

You are starting with an open chamber head and piston below deck. Both the piston and head would have to change.

For pump gas compression on a stroker, a "D Dish" piston works best. The flat on the piston almost touches the flat on a closed chamber head. The dish in the pison keeps compression in the pump gas range. Ed closed chamber heads nominally 84cc's work well for this.