$50's probably fine.

Just FYI, I like these games a lot. I screwed around with them for a little bit. The players are horrible, and they're fun to play because they're so incredibly player dependent. In 300 I had a 30% ROI (small sample, I know, but I think it's very doable longterm), so they're nice to play and the $/table-hour is much bigger than for 10-person $5.50s. You can't multitable though, so they're not nearly as profitable.