I'd join just for the heck of it but I still am a bit iffy on the format of the league being a bar for separation. Someone who's on a lower league in 1v1 might actually be of higher standard compared to a person whose league standing is actually higher due to the buildup of skills in 2v2, 3v3 or 4v4. All in all, I'm not going to be there to join the competition but all the best to the organizers. Good luck, have fun.

how are they going to organize SC2 tournament ? are they using LAN ? or go through original CD and online ?

i do though i'd urge anyone who wants to play to pay for the full one. important if you want to improve!