No sense unless the tech camera offers at least one axis of tilt and shift both ways. I guess the very minimum would be one axis of shift (alpa stc, maybe a Cambo version of that as well). I have used several ccd backs with basically unusable live view, setting framing by taking shots and moving the camera, setting distance using a rangefinder (Leica disto)
Mostly I use rise/fall for framing, keeping the back vertical, and minimizing the foreground (important for wide angles, any shot wit verticals, like buildings).
Tilt can be set by the numbers and by shoot and check. Backs have playback with a zooming feature, but the older backs have unbelievably crummy lcd's for viewing. A step up in price gets you into phase IQ, newer Credo, and blad. Another step up gets you a cmos back which does have real and useful live view.
There is a used market with reasonable prices for these items but be prepared: used backs don't get the value they should, good for the buyer, disappointing for the seller. Also that market is frequently impacted by model changes and upgrades, with many trade-ins, so dealers usually have considerable inventory.
There are several dealers who participate on this forum and might be a good place to start