I really don't want to rain on your parade, but here goes.
-This is event is both short notice and not properly organized. Even signing up on your site and reading the details, there's still a lot of "maybes". (prizes, betting, etc). A lot of the information seems geared at the PS community, mostly giving away keys and such so they can participate.
-Who's participating? As far as I can tell, there's no roster of current signed up teams. Often seeing others signed up will encourage teams to sign up themselves.
-How are you getting attention for it? Right now there's just this forum post. Most of the GoIO community doesn't check the forums, so you're going to need to spend some time in game if you want to get more players interested. And you're going to have to convince them to sign up to your site to view the information and then email you their team information. That's actually asking quite a lot of the average gamer.
-When is this happening? Days, times, etc. People are going to have a hard time committing to a tournament/event when they don't know when it's happening. What if it conflicts with other events?
-How do you 'win' the tournament? Is it point based? You say that it's 2 matches, but that can lead to what we in the industry call 'A Tie' (each team wins a round). Which is often why most competitions do a 'best of 3', which just means someone needs to win twice. Is it single elimination? Double elimination? No elimination?
-The match details. Just a lot wrong here. The creator can set the server if they want to. Otherwise it will auto-set it to what works best for you. 15 minutes of active combat? Please head over to
http://cesports.org/matches and watch some of those videos. Matches rarely ever end in 15 minutes. There isn't much need for calling out to their team and the enemy. Or waiting 5 minutes to make sure everyone loads. The game actually does a 30 second or so loading screen to make sure most everyone is ready to go immediately.
-"Drop into ships and listen to crew chat". This can't happen. There's no tools or resources for it. I would recommend spectating some matches to become familiar with how it works, and what you can and can't do. While you can see players on ships, it's difficult to get close ups of them. It's also impossible to listen in to the crew chat. More importantly, most veteran competitive teams use their own voice systems (skype, steam, teamspeak, mumble, etc). So if you ask nicely, this may allow you a way to listen in on them and record. Otherwise you just can't.
---
It's mostly a nice idea, and sounds fun, but you really should start smaller. You're trying to pull off a large scale event, and at this rate it's just not going to happen. You don't have the trust of the community, the organizational experience, or fundamental understanding of the game mechanics.
You need to get all of that and more very very soon if this is going to work. ((and it also does seem very super scammy when you put that much emphasis on players giving you cash for the chance at virtual goods and the promise that you'll donate the money to a charity. Is there anything to guarantee this? You really want to build the trust before you start asking for money.))