The neversummer boards are really popular on here, no doubt about it. So probably a good bet.
Yes, you can get away with a 25.5 or 26 for sure. Just depends on how you are going to set up the bindings and what type of toe lift you can get on your binding base. Before you pick a board, grab the binding you want or have with your boot, strap it in, and see what the hang looks like. Nothing worst than getting a new board and digging your toe in on your first ride.
I think if you are in the 25.5-26 range, you should be alright on width. Just don't even consider going any narrower than that.