I just moved 2 days ago with Daphne – and he was a little annoyed to be in his smaller pet-store cage for the moving day as it was a complete disaster area and I just put him in the corner for a few hours so he didn’t get trampled. By mid-afternoon, I got the X-pen set up so he could run around that. Finally, last night, my bedroom was clear enough to let him roam around and it was like the first day I brought him home – he hopped around sniffing everything, and then started to figure out a good running track, and was binkying within 15 minutes. I’d say the adjustment process was pretty fast.
I can’t really comment on litter training issues as the dear bun is going in for his neuter tomorrow so I gave up on poops being in the pan a good month ago, haha. But, even with the move, all the pee has remained in the pan (*knock on wood).
Sooooo, to answer your questions: I think you’ve got the right idea by getting your new place set up before Oreo gets there. I would guess Oreo will adjust pretty quickly, and you’ll have fun watching the bun hop around smelling everything
Not sure about cleaning products – in general, I try to avoid using products in areas that Daphne might lick or try to chew. But, if you need to clean, then you need to clean. Maybe wiping it down with a wet rag afterwards to get rid of some of the chemical residue?