Performance, Value, Practical Utility in my opinion.
1. A used 8x10 studio monorail like a Sinar P or Norma, ($1000 USd) with a 1990s-era 240-360mm Rodenstock lens ($5-800), a huge Gitzo #5 504 tripd ($500) and $1000+ worth of film and holders. This is the best way. Color Negative, not chrome, you have a good scanner to use so why not scan big film?
Don't fall for that wooden camera Deardorff-Ebony BS, you want a sturdy camera.
2. A used Graflex Crown Graphic ($350 USd) with a 1990s-era 90-210mm Rodenstock lens ($3-600) like the Grandagaon 90/4.5. Budget for $100 ea Grafmatic holders (six shots) and a lot of film. If you are not using movements (and even if you are) the $250 light tight box is just as good as the $5000 light tight box. Actually a $1000 1950s-era Linhof Technica IV will be a little studier, but the Crown has few parts to wobble anyway.
3. A Fuji 6x9 Rangefinder, either 65 or 90mm, their lenses are amazing, as good as the Mamiya 7 or better. Under $1000 USd.
As nice as they are, with those $$$ Digitar lenses, I can not imagine why an Alpa could be somehow sharper than the Fuji? The Fujis really are quite good.
All said, a tripod is the key factor. If you are forced to handhold, then the 4x5 in bright light (1/250s @ f/16) if going to win. If the light is poor or mixed, the Fuji at 1/125 @ f/8) will be the best.
Guys like Spencer Tunnick, who does all those groups of naked people in cities, use the Mamiya 7 and it works well, but I agree, it feels like junk after using a Hasselblad or Leica. And imho, being 2m away from his big prints made me wish he used 8x10, because he easily could have (plenty of light and depth of field with the kinds shots he does.)
Those Duselldorff type photographers, Struth and Gursky, etc. used 8x10 until recently they may be doing medium format digital by now I do not know. Their prints are the best and a benchmark.