I don't know if your boys are interested in tent/or small out building, but it does make it nice for adults. Several years ago, we put a storage shed on a lot in FL and camped in it when we were fishing in the area.
I will say if you think they are going to prefer sleeping in the camper, get a bunkhouse. I have a trailer that I love the floorplan when it is just me. I bought it for just me. My kids are grown and out on their own. The few times my son traveled with me, he pitched his tent. Now the last few times I have gone in the trailer, my mother has joined me. She insists on sleeping on the sofa, but I have no "me" time to get up and have coffee. It does make things a bit strained when we are trying to get out and get going. She and I stayed in TT for a week visiting my DD and DGD, and the trailer got entirely too small without us each having our own area.
