The sleeping room idea appeals to me. The older boys WANT to share a room right now because they're afraid to sleep alone. I sleep with the 2.5 yo but soon I want to stop that, and then he will probably want to sleep with his brothers.
I can't imagine squeezing three beds into the smallest bedroom, but maybe I could put the three boys in the master, DH and I could have the medium room, and we could use the third for a study room.
We do have a downstairs room next to our garage that we use as a playroom. Someday we could probably put some desks down there as well.
For people with sleeping rooms, how do you deal with different bedtimes and the kids waking each other up early in the morning?!!!