Wow, that was a great find! A bargain at ten times the price.
I like the CTC-5's. As for picture quality, they're quite watchable when working properly, but keep in mind that the 50's-era color CRTs have pretty low brightness compared with color CRTs starting in the mid-60's. [Poor brightness was one of many contributing reasons why color sets didn't sell very well back then.]
Also, since you're new, a few care-and-feeding tips might be handy once you've gotten it restored:
These sets have no built-in degaussing coil, so if you move/re-orient the TV, or you get any large magnets near it, you may need to demagnetize the CRT. (there have been various threads in the past on AK about how best to do this)
Due to their particular electronic design, the static convergence appears to "drift" pretty easily on these sets, so you'll probably want to at least learn how to reconverge the set yourself. Fortunately, all the convergence controls on a CTC-5 are accessible from the front of the set (after you remove the "pencil box" housing the secondary controls).
I'm sure there are some other "user" tips like this that would be helpful, but those are two that came to mind off the bat.
Have fun!