Strong contender right now. Main downside appears to be inability to sit on toilet with door shut, but that may not really be an issue. Also, would prefer to have it built on the Transit, but... also, unsure of the AC situation.
However, the attic could come in real handy either if only the kids are sleeping in the van (one up, one down) or if for some reason all four of us were forced to sleep inside.
https://winnebago.com/models/product.../class-b/solis