Yeah, I think I like 200BB buy-in, so for $0.25/$0.25 it would be $50.
My only concern is that you'll get several guys who regularly (or who are at least very comfortable playing at) $1/$2, or $2/$5, will show up and start open raising pots (or 3-betting an open of $1) to $5-$10, because that's what they're used to, and the pot sizes at this game will seem to small for them, so they will just instantly balloon it, regardless of their holdings.
If you're a reg at a $1/$2 (or higher) game, then I don't see the point sitting down at this game, all you're going to do is alienate the guys looking to get into cash and they'll never actually end up working up to the higher stakes and you'll just end up with the same old player pool that you're used to. If you want new players at your games, then you need to give those players a chance to actually get there.