Eww, don't apply to OSU. Columbus smells*
I was applying to PhDs in Topology last year... I wasn't completely sure on exactly what I wanted to do, so I wasn't too sure about where the ideal places to go would be. If it were a few years ago, I might even say my school (Ohio University) is a good choice. Alexander Arhangelskii was here, but he retired in 2011. Though I'm not sure if he did anything with Algebraic Geometry... Anyway, I don't otherwise have much to say about your list, since I don't know much about any of the schools (Except OSU). I seem to remember UT Austin looked like a nice program, but that was about it.
As for your GRE score... Try not to sweat it too much. I got 47th percentile when I took it last year... Unless you're applying to really top end programs, it doesn't matter that much, especially since it is a really hard test (WAY too much calculus on that thing >.>). I, of course, was arrogant/dumb and only applied to top end programs, which is part of why I didn't get into any of them... Oh well
* I don't actually think Columbus smells. I just dislike OSU because everyone in this state is obsessed with the school, and people out of state always manage to think OU is OSU