Wow-- that's a lot of daybeds! I think, like my Super Mom's space, this room is meant to stash a whole lot of grandkids! I love that daybeds can double as seating during the day, which turns this bedroom more into a play room while the sun is out.
Go for double duty. Consider adding storage beneath any built-in seating. Attic spaces tend to be tight, so you’ll be glad you’ve got the extra hiding space for that magazine collection you’ve been slowly working your way through.