(Thanks for the heads up, M)
Will, the Ohio State CMT group is very strong, and definitely much bigger than the AMO group. I'd also venture that our AMO group is almost entirely experimental. Cold atoms theory is essentially done by folks from CMT (Ho, Randeria) and Nuclear/HEP (Furnstahl, Braaten). There really isn't a group that works only on Cold Atoms.
The funding question is harder to answer. Typically, you'd spend the first couple years here doing coursework and exploring research opportunities along the way, especially during summer quarters. Unless you've got very strong skills to offer, a faculty member is unlikely to give you a chance over someone that's already been here for 2 years. And typically, you'd have to work with a group for some kind of vetting period before you are put on an RA, if one is available.
It's a pity you couldn't make it to the open house. You missed an opportunity to directly get some of the inside scoop...and you missed our biggest blizzard of the century! If you have any specific questions, feel free to shoot me a PM.