First, I would suggest using your 22” WSM.
Second, I would think you could fit 4 on there. 2 below, and 2 underneath. This would give you a large area on 1 side so you wouldn’t have to reload fuel as much.
This past weekend I filled up my 26er with 80 wings. Indirect at 375° for an hour, but I was not happy. Skin did not crisp up like I wanted. I was running out of time so I had to serve anyways. I haven’t tested the therm yet, so that may have been my issue. I think I needed to start with more coals, but I had a pretty small area for coals to fit the 80 wings on there.