Not much choice here, as there is only 1 zoom for the Hasselblad 6x6: a 60-120mm which works only with 200-series bodies. It is a beast of a lens! (at least as far as size is concerned - I had one in my hands at the local store but never tried it). Not sure it is much smaller than carrying a 60, a 100 and a 120!
And as far as the "ideal" Hasselblad combo goes: don't worry, you will own them all eventually (*)

Even if your bag only holds 3, you'll pick the "3 best for that day" depending on what you want to do.
The same probably goes for any system with a reasonable amount of lenses (e.g. Mamiya).
(*) perhaps with exception of the 30mm fisheye and the 500mm tele