nice pickups, I'd go with the ghost x het ghost long before pastel x het ghost. 1st pairing would result with 50% chance for visuals and 50% chance for 100% hets, 2nd pairing would only give 50% chance for 50% het ghost and 50% chance for pastel 50% het.
Keep a visual girl (or 2-3-4 whatever) back and breed your pastel to that, then a male offspring pastel back to mom for POGs.