You only live once and the other mutha fucka has two hands legs etc....just like you do. And hell it's amir freakin khan, wasn't he just starched by a guy who no one knew or gave a fuck about ? You actually have a good shot of winning imo. Boxing is a game of inches take a chance get lucky. If you loose now so what, learn and don't loose anymore. And if you win learn on the job like berto and tim bradley are doing. And as far as the training you should be training for every fight like you're fighting floyd on fri and pac on sat imo. But i've never hit anyone not even my bad ass kids so i dunno