you're running a 1.65:1 rod ratio right?
I'd .032" is what I will target (.028-0.034 are usually pretty acceptable). Leaves room for some stretch. Rotating mass and force (engine speed and rod ratio) are your big factors.
Since you are stroker 2.35 IIRC you are basically a EJ25 with a lighter piston and can stand to be a little tighter. You also shouldn't have an issue with the cam you are using a set that was made for that rod ratio and has the appropriate LCA.
You will still want to clay the engine for clearance when doing changes like this, oversized valves and cams. Better to make sure before you put it in the car