What valves to use

I'm building a D16y8 block with Z6 head: JE 10:5.1 compression pistons, eagle rods and going to be using the bisi stage 2 cam. My question is will the standard ferrea flat face valves clear the pistons if not which ones do I need to get? I don't want to have any more surprises like I had with the rods hitting the gurdle.