From what I see, Meredith Manor looks great, and I'm planning on going there maybe next summer for a 12week session. I have not been there yet (I live in Michigan, so quite a drive just to visit) so can't answer any spicifics.
Iseul, sounds like no matter what place you go, you would have trouble, given the information from your original post. As for the stall cleaning, I do the same method you described in your second post, and each stall only takes me 20-25 minutes. That is including dumping the wheelbarrow, loading fresh shavings, and spreading them in the cleaned stall. But then I have a high work ethic, and work quickly and efficiently.
I would suggest that if you are interested in MM: check out their site, order resources (they are free), and if close enough to be reasonable, visit and talk to a few of the administrators, students, instructors and professors. Between all of them, you'll get tons of information!