Upload & Sell: Off
As others here have mentioned, shooting medium format film is an entirely different experience than shooting 35mm film. It is far slower and more deliberate. I am a former wedding photographer (1980s-1990s). I used mostly Hasselblad 500C/M, which has a manual film advance that required a full circle turn of the film advance. The medium format lenses are much larger and heavier than anything that you are used to. This also applies to the excellent Mamiya RZ systems, which are even heavier than the Hasselblads and Bronicas. There is no question that medium format will require a slower workflow. If you are used to shooting hundreds of frames per minute in a studio setting, that number will likely be reduced to 20 to 30 per minute with a medium format film system, even with an autowinder. Remember that autowinders on a 6x6 or 6x7cm format have to move a lot more film per frame and to do so safely and consistently is a much slower process than a Nikon F Series with winder.
My advice is that if you are looking for a much higher resolution system that will actually be enjoyable to use in a fast-moving studio setting, move up to a D800, which has a resolution that rivals today's medium format DSLRs. I have two of these. They are much lighter weight and ergonomic to use than medium format cameras of any type. Further, Nikon F lenses cost far less than comparable medium format lenses. You should also consider that within another 5 years or so, the average pro DSLR will have higher resolution than today's medium format DSLRs, so to move to medium format now may not be your best move.