It depends which division your in...Last years LCQ in san diego had over 1,000 in masters about 3-5 hundred seniors and I think 2-4 hundred juniors. The only real way to measure your chances is to test yourself in BR, City, State, Regionals, and BR before worlds. You dont have to win every one, because if you did you wouldnt have to play LCQ, but if your getting top cut on most of them, then I would say yes. I also see that you are from canada so if you are planning to travel to san diego with the intention of getting an invitation then I wouldn't be so hopeful. I would come to have fun and enjoy the environment. When I went last year I came to get an invitation. My day felt ruined because I went 4-4, but the next day when I came for the side events I had way more fun and wished I would have just done that instead of play the LCQ.