I have a 10 gallon that I want to use for killifish. It's going to be my dorm tank. It won't be set up for awhile yet. I'm planning ahead. Anyway, I've always wanted killifish and I'm taking this opportunity to get some.

Can anyone recommed a species to me? I was thinking about Fundulopanchaz gardneri, but I'm open to more, and maybe better suggestions. Killies can be really hard to find in fish stores. Which is the most commonly found in LFS's?
Should I keep a sticktly killie tank or should I add some other fish? I'm open for suggestions! Anyone?