How about one alternate instead of three additional games. I wouldn't have been able to do four in february, and I certainly won't be able to do it every month. I just don't have the time.
One game for everyone, one game chosen by a partner. Two games a month. Keep in mind some games can be upwards of fifteen to twenty hours, and that would be the majority of my gaming time for the month.
(And don't go by my Steam Card, I frequently leave games running on the PC while I do stuff around the house.)