As far as boot fitters go, Steve Baughman, the guy that doest the bootfitting at william's ski Haus in Highland Park is the best as far as i know. He has done sevral apline snowboard-specific thermoflex jobs, including mine. If you have any issues with your boots, pressure points, etc., he can and will hook you up so that your feet are extra comfy while you're trenchin'.
I also ride the USASA series at Tyrol regulary. It's a great place to convein with all the carvers in the area even if you arent competing. The cost of USASA can be a bit prohibitive, but if you intend on going to nationals (totally recomended, a guarenteed awesome time), then it is definately worth the cost.