I love my RZ67 Proii. I have the 50, 90 and 180mm lenses. I use it mostly for portraits as it really captures something special. I have lugged it around all over the place, and although I don't anymore (I have the Mamiya 7) I still take the RZ out for a spin.
You might be interested to know that you can also use the 220 backs loaded with 120. I see that film backs are cheap on eBay nowadays. What I love is that you can carry several backs with different films, the system stops you along the way if you're doing something wrong (I don't know how many pictures I've taken of my lens cap on the Mamiya 7!) and it's like a tank.
I have and use the dual cable release, I have the infrared remote control which I cannot get to work. I mostly use the 50mm lens.
Enjoy your system, it's a wonderful beast with a wonderful soul.