Howdy - I helped out at the teen (also combined with masters and women) nationals this past summer. I'm assuming you're a lightweight, though correct me if that's wrong. If you are, and you get a chance to practice the events in the contest before the show, you'll be reasonably competitive. I believe the teen lightweight deadlift medley went up to 335 at nationals just to give some perspective, though I may be remembering that wrong... in any case, with some hard work with the specific events in mind, you'll make a good showing at a regional contest.
You may want to practice loading the bag onto a higher platform, though; there's a trend towards pretty high boxes these days.