I'm in the right frame of mind. ok, so maybe I overreacted a little. I've been collecting various things for over 30 years, and I have always looked for "as original" items to buy.
I think I will love the camera. The controls "feel" nice when you move them or turn them... like quality (well maybe not the I-50 though).
I was quoted $150 for a CLA for the IIIc by the camera repair shop in my city. they have been in business since 1948. I gather this is a fair price? They said that it included no lens work.
KEH seems like a good place. However, in my case, I asked a few specific questions about a particular Leica IIIc in their vintage listings. Their reply was something along the lines of "it's used and will show some wear". Ok, thanks...
I ended up buying from adorama, and I did not bother to ask anything first, so I can't say for sure how they would have replied.
I am printing out an owners manual for the IIIc from cameramanuals.org.
As to the original question "which lens to get", although I just bought an I-50, I intend to also buy a J-8. f2 is much more usable than the f3.5 of the I-50.
thanks again for all the info!