Dota allstar game tournament

I'm going to join Dota allstar game tournament this coming May 2010. Our gaming center held this said dota allstar game tournament on May 2010 with a grand prize of P25, 000 for the winner and champion. My friends and I planned to practice our strategy and game plans. Maybe this weekend we will reharse our game plan. I have my own idea about hero picks and what is the weakness of all heroes and advantages and disadvantages. I hope this will work.