Don't know boas, can they eat eggs?

[Evenstar]

Yes, lol, one step at a time.

The caging will be fine for now. Sounds like you have a good plan in mind. If it's kept clean, that'll make all the difference to him at this point. I would find a way to cover the screen top most of the way to help hold in heat and humidity - especially humidity. He may come to you dehydrated.

Boas will soak, but it isn't strictly necessary. I'd give him a large bowl, but one that doesn't take up all the space in that tank. Ceramic is best - boas like to spill their water....

I would personally pick up a bottle of Reptile Spray from Rich at Reptile Basics. This is excellent against mites and is much safer than PAM. When you get him, spray him down lightly as a preventative. Keep him on newspaper or corrugated cardboard for his entire q/t period at least.

Provide a large hide box. He may not use it, but if he does, he'll feel more secure.

Find out when he last ate (egg or otherwise). Wait at least one week from his last feeding. If he ate an egg, I would actually wait a little longer and see if he defecates for you before you feed again. Give him a chance to clear out some of that shell. If he ate more than a week prior to you getting him, wait 3-4 days until you try. Let him settle in a little and get used to his new home. They aren't as touchy as ball pythons in this department, but considering his background, he may need some TLC.

DO feed him slightly smaller prey. Start easy. If he will eat an inanimate egg, he ought to go for f/t so I'd give that a shot first. It's hard to tell just how big he is, but a rat is going to be easier to digest than an egg, so I'd start with a rat that is about or slightly smaller than an egg.

I know we still need to see if you actually get him, but I thought I'd answer a few of your questions now so you could be more prepared before you bring him home. Good luck!!