Ok, I understand the "How many cameras" part, but I am baffled at the "is enough" part 🙂
I think your initial listing was adequate, and could even be reduced a little by getting rid of the Zorki. The R2 is every bit of a carry around camera as the Zorki, so its duplication. The rest isn't, and it gives you small compact RF, SLR for macro and long lenses, and then the medium format. So I'd dump the Zorki, and grab a nice folding field 4x5!
My kit is heavy in SLR, digtal, and MF due to work. Here is what I have, and how I would reduce it if it was just for personal use.
Fuji S2 Pro
Fuji S2 Pro (backup)
(above to be replaced with a pair of D2x when they ship)
Cypershot P1000
Nikon F5
Nikon F5 (backup)
19 Nikon lenses for both the F5s and S2 Pros from 14mm to 400mm
Bronica SQ Ai
Bronica SQ Ai (backup)
120,120,220,220 & 50mm, 150mm, 80mm
Toyo 4x5
Nikon FG
Nikon FA
Bessa R3a black, 21mm 4, 35mm 2.5, 40mm 1.4, 75mm 2.5
Canonet QL17 GIII black
Vivitar 35ES black
Kiev 4A black
Konica S3 black
Yashica GSN
Yashica 35CC black
Yashica MG-1
If I wasn't working, here is what I think I'd like to end up with as my reduced kit for just personal use.
Nikon D2x (digital)
18-70,24, 50 1.8, 85 1.8, 70-200 2.8 VR
Sony Cybershot P100 (pocket cam)
Bessa R3a 21mm, 40mm, 75mm
Hassy, 80mm, 50mm
Field 4x5 camera
Thats 1 digital SLR, 1 digital pocket, 1 RF, 1 MF, and 1 LF