I'm also building one right now and (as people here will tell you) I've looked at this from every angle. Seems the best approach for a non-stroker is the KB240 pistons. They will put the piston roughly .015" in the hole, so with closed chamber heads and a gasket that compresses to .030" that will give you good quench and compression. Mock it up to check for clearances.
I stand with ears open to hear what others tell you.