Our problem on the Vegas 24.1 is that the back bed, when put together as a "King", is actually 92" X 75" which is larger than a King! The lady at Bed Bath and Beyound recommended something called "The California King" set of sheets (sticker shock). My DW is thinking a King but for a deep mattress bed??? Any suggestions here?
Just saw this, so you may have already resolved the problem.
For the bottom we use one fitted twin and one fitted full. Fits the king bed perfectly! We use regular king bedding for the top!
During the day we lift the corner of the full sheet and remove the center cushion to have that extra floor space and access to center drawers. That also makes reaching the overhead cabinets much easier!
Though we prefer the king configuration, we also keep a second fitted twin in the coach, so we have a backup plan if either of us develops a knee or back issue that makes crawling into bed difficult.
Hope this helps!