B.K.
Hi J.,
In my opinion he is too old too sleep in a pack & play on a regular basis. Just think of the name it should be used that way. When you travel or just want to keep him safe in a place you can find him (if he's crawling already). My suggestion is to get a sturdy bassinet, then he still can be near you in your room at arms length. He'll grow pretty quick now so the bassinet would be your temporary solution.
Hope you guys find the house of your dreams soon. Good luck.
Bernie