I can't see it taking off with all the competition you got going in your field, you'd def have to cough up an arm and a leg to go into a marketing budget.
The onsite
SEO is poor, design is ok but to any new member all those ads will def put them off. You don't even need them to start off with, not like you have an active forum with return visitors and potential ad clickers. Focus on building you community first and not as much on ads and making chump change for now. Get 15-25 people/friends/paid posters to fill the forum up with good decent content for like a week or so, that way it wont look empty.
Design wise, it's ok, the logo is a bit ick but it's not gross looking.
Good luck.