First off you have a great base and can really develop your physique and have an impressive one in the future
You can do one of 2 things, Do your comp, you will learn alot, but you will also learn first hand what the boy's above me have already told you, you need some more size. Or, you can bulk up for a year and analize how you look, I wouldn't try to compete unless you add another 25+ pounds. But its your call. Good luck and take the advice off the people on this form who have good physique, and by good I mean LARGE.