Hey man, I train Brazilian Jiu Jitsu, and can understand the situation you are in. I don't think shooting will help you "chemically" because you and I both know that it's going to come down to technique. You and I both know that when it comes down to it, size and strength mean very little when you have very good skills. Get your head together, and get it clear.

If you think this is only going to help you "mentally" because you feel you are "invincible" then hey, go for it.

Comming from another MMA fighter, that's my $0.02

Good luck with the fight, give 'em hell!