Welcome from Minnesota.
I just want to say, find one with everything working properly- like ac/ heater- Some of the little things can be a big pain in the a$$.
Windshield frame, rocker boxes and door pillars and floor boards are the main things to be picky about. The other body sheet metal is not to difficult to repair. Also , take a good look at the tailgate- Repro's are not as good, and good originals are not the easiest to find ( at least not around here)
Single wall top is the only way to go
If your interested in an original to restore, get one with all the parts- like original seats, console etc, you can fix them up, but finding them is a pain.
If I had to do it over, I would buy one of those $8g rides and spend the time driving it instead of spending all the time fixing, rebuilding, or looking for parts. Just my $.02
Check out
www.coloradok5.com Lot's of good guys there
There are lots of good parts suppliers, several on this board, check around and make up your own mind about them, get all the catalogs you can.
4x4 is ok but 2wd are cool if you can find one and fewer drivetrain headaches !!!
Good Luck!