RS with 3 kids 38” under 7yo

[smallsy]

I’ve been doing some research on here and blogs and such but I’m still unsure as to how this will work. We are a family of 5 (2 adults and 3 children DS6, DD4, and DD4). The twins will be 38” by our trip but probably not 40” so the rides I’m most concerned about that I know they won’t allow us to squeeze 3 across on are Barnstormer, SDD, and 7DMT. How can we make these rides work when none of the kids can ride alone?