Any compression and leak down tests will be more accurate after the engine has been running again. This will only relate to the ring condition since the valves aren't leaking on the seat. I doubt you have any bad rings - which would have showed oil fouling on the sparkplugs. So, this step isn't needed now. After the final head torque, concentrate on intake to head matching and correct pushrod length. Depending on how much was shaved from the heads, the intake could require some machining to compensate.