Hey Charles, welcome to KOTR and Korea. If this weekend isn't gonna swing, fret not. The very next weekend we are having another bash at Ganhyeon Crag which is near Wonju city in Kangwon-Do Province (yellow area on Korea map at bottom of scroll bar on KOTR Left). That's kinda a haul for you guys from Gwangju, but it'll be a great weekend, and it's a super cool crag. Great camping, a river, Min-baks (cheap private doss-room hotel things) and heaps of climbs. Check out the link if you are interested:
There should be about 10 of us there at least, so come on out and meet the crews.