Thanks guys. Sounds like some great lounges. If I remember correctly, i'm on a F award ticket from NRT-ICN and then J (Business) from ICN-HKG. If you then reverse the routing, that's how i'm returning. So between the inbound and outbound, I should be able to at least access all the lounges mentioned. I have a 3-4 hour layover in ICN too. Woo-hoo!
I'll post a synopsis here after i check it all out - to update everyone.