ricardo is your go-to man for kunsan. i live in jeonju just south of there on the train line. fortunately, pulic transportation in korea is pretty good, and you can usually join others on the weekend. you're in jeollabuk-do province, near chungcheongnam-do--- you can "search climbs" for more info on the area. if you like plastic you're set: there is a small gym in addition to the public wall in kunsan )posted), and another wall in the gym on base! (you can search cities, but try gunsan, with a "g". . . the "preferred spelling under the "new" standardization!)
"If you can't do something well, you might as well learn to enjoy doing it poorly."
-- from a de-motivational poster, but I find it oddly liberating