Unfortunately I can't fit my Jayco Jay Flight 26BH in to many state park campsites like I could my previous Jay Flight 19BH 22.5' travel trailer. It's 29' long and if I could, I wouldn't had gone longer than 26'. BUT you'd be hard pressed to find a bunk house trailer with bunks, sofa, and a queen bed without being at least 28' - 29' minimum.
Also, you can't go by a model number to determine your campers actual length. Some use the number but it's very few. Most use a number near the box length which means you'd need to add another 3.5' for the tongue and bumper. For instance my 22'5" long 19BH. Then you have my 29'1" long 26BH. Also Jayco uses different numbers for the same floorplan. 26BH and 27BH are the same floorplan so the numbers aren't the box number always. Campgrounds use the actual length to determine if your camper is going to fit into their campsites, not a model number that could mean anything.
Good luck.