the reason we like playing at gety is because of the people and community, money is just an incentive to show up at tournaments...
the way you're going about it is kinda the opposite...
i still might show up just to try and help, but i can't exactly guarantee a huge turnout like t11 since everything was so rushed and everything, especially for the fact that it was so soon after t11...
if i were you i would hold it off until a while and word of mouth spreads
but yeah, 1 extra week wont exactly help alot of people notice it, unless you work your ass off, which no one really likes doing lol
edit: if you want an even larger turnout, hold it in conjunction with another tournament like ssf4 of (lol) brawl
i can almost guarantee you the latter games would get a higher turnout, but more people = more word of mouth = higher chances of bigger turnout
also apparently i have nazir's taste in music, lol