Junior Tournaments
I think you are in luck, as the BCA has just announced that the new age bracket for the Junior Nationals will be 19 and under. This is to match the age limit used in the World Junior Competition. I would expect that the Junior Tour in the Orlando, Florida area will follow with this lead (if he runs the Tour this year). If not, there will be plenty of qualifiers throughout the USA starting around March of 2006. Make plans to enter as many qualifiers as you can.
With all of this said, let me add that most of the junior players age 16 and up are more than capable of winning open tournaments with adults of all ages. Check out Sylver Ochoa, Justin Bergman, or many others that routinely take down big tournaments. These guys may (or may not) still be juniors, but when they were, they certainly didn't need any handicap with the adults.
If you decide to play in the qualifiers, I wish you the very Best