Oh LBF, I forgot- yes screen cleanings are the best! Like a new pair of glasses!
Yes, oxbow hay is the best. It's mostly personal preference, you want to make sure there's less moisture and more fibre. A lot of them have a lot of dust too, Living World being more dust and un-edible pieces than any other brand. Walmart's brand is okay when it's in season, I'm after buying that one in winter and it's all brown. You want to also look for color, green.
The poor thing, he'll be in a way better home with you. A nice nail clip and groom and soft clean bedding. He probably will be VERY sensitive for a week or two as he gets used to eating hay and good pellets. Since he doesn't get any hay now it explains the runny poop. Timothy and instead of orchard, get oxbow botanical. It's got the purple on the bag (timothy is red, alfalfa is light blue and orchard is green, oat is yellow) Botanical or oat will encourage him to sit and eat the hay, so he will eat less pellets. In fact, it sounds a lot worse than I thought, when you take him home nd get the hay only give him like a small handful of his nasty food, like maybe 1/8 of a cup or less. Just enough so he has it because he will want it while he weans off it and onto hay.
Actually, when I got Akina she was in a typical over-fed mini rex condition and HATED her new diet. I would only start giving your bunny veggies after he's weaned onto hay and proper pellets.
Aw how exciting Friday will be!!!