LOL wtf are you doing? are you asking for a match on the forums? or am i misreading something? why not make an irc channel for your clan, so you can get all together and discuss stuff, then finally send out a scrim request so you get a team to match.
Looking to join a clan? Want to schedule a match? This is the place to do it.
Don't see a problem with it. You'd get them to agree to a scheduled match easier though if you gave them three different days as options, instead of just saying 'today' They might not even see the topic by then.This could spark interest if done right. If some top clans advertised their matches a few days in advanced on the forums and offered spectator spots to the first 5 or so people to post dibs. I know a lot of newer players would enjoy getting to sit in and watch a fun match between top clans.