Great idea! I wanted to post this a week ago or so, but I didn't because it would require me to be there during those RP sessions, whereas I wouldn't be able to. However, I strongly suggest doing this during weekdays. I for one am busy on most weekend evenings, hanging out with friends. But, if weekend days will turn out to be good, then so be it.
Mondays, tuesdays and wednesdays would be perfect for me, for example.