URGENT: Need Advice About Ball Python Swollen Face

[GoldKingCobra]

I vote pushing injury. I kept my adult male bp in a similar enclosure. I moved him to a larger one when he started injuring himself pushing. Likewise, my bp's only injury was swelling.

How big of a cage do you recommend? The one he was in is very large compared to his size. Would I need to get a bigger one or just add branches or something for him to climb on?