A 90mm 5.6 will be bellows limited on the Wista. A slower lens with a smaller rear element will get you a little more. That said, I have hit the bellows only once with my 90mm Caltar HR when using a lot of front rise. The 24 inch extension will limit you to something under 300mm unless you use a top-hat lensboard. Mine has rear swing and shift, which is handy sometimes.
Otherwise it is a decent camera. The only detents on mine are the rear tilt/baseboard neutral position. Everything else is friction lock.
My other 5x4 is an MPP VII technical. That is very limited for movements with a 90mm Super Angulon f8, but it has the bellows draw for a 400mm lens. Different tools for different jobs. It's about twice the weight of the Wista.