Nice images Mike! I have one too. I started with the basic 80mm Distagon and no prism finder. The prices were very high on the lenses but have come down and I was able to add a 150mm Sonnar and the prism finder.
I had trouble foccusing with the waist level finder because of my bad eyesite. I find it much easier with the prism and the Beattie Intenscreen. However, the micro prism in the Beattie screen drives me crazy, I would have ordered just the plain bright screen.
It's a great camera, have fun with it.