Hello Ted, sorry about your loss.
Ive previously owned a Pentax 645 and 45, 55, 150 lenses. Great system but I prefer something more mechanical and i like the square format so I sold it for a 500cm with WLF and 50CF, 80C, 150CF, 250C. I gotta say the Pentax gives it a good run and for action shots I would think a lot easier to use. I find focusing the Hasselblad lenses stiff and slowwww. Beautifully made but I use it from a tripod mostly. Kudos to those who can follow action with one.