Marc
To my mind,the camera system you need,based on your post, is the Hasselblad ArcBody.
It has been discontinued for some years now but still comes up regularly on eBay.
Ther ArcBody has 3 dedicated Rodenstock large format lenses available-35,45,and 75mm.
Tilt and shift can both be had,simultaneously,on the same axis but be forewarned that
the amount of shift is fairly modest when coming from a LF background,as you have
indicated.
Shift also only goes in one direction so if you need 'fall' then the camera has to be mounted
upside down.
Lenses are extremely sharp and system use is very quick,once you familiarize yourself
with the camera.
Currently,there is one total kit on ebay,including all three lenses,camera,accessories and
a Flexbody and accessories to boot.
Priced at over $10K it seems expensive,at quick glance but considering what the
pieces go for individually it is not that bad. The 35mm,in particular,almost never shows
up on the used market anymore so to find one,if you think something this wide falls
within your projects needs,is fortunate albeit not 'free'.
I've had my ArcBody for many years now,and despite not having used it apart from
running assorted DB tests with it for a couple of years,can't seem to part with it
Good luck,
Mark