Why are you so worried about POP maxing out? You have "price protection." If POP maxes out, they'll offer to move you somewhere else at no additional cost, perhaps AoA. POP is the cheapest of the resorts currently scheduled to reopen. If price equates to quality, being moved to anywhere else would be an upgrade.
If you for some reason really want POP, I'll add that it is the biggest of the Disney resorts in terms of number of rooms. It shouldn't max out quickly.
FWIW, I have an ASMu reservation in August. I'm waiting until things settle down before calling.