What you are shooting is just fine for 3d. The biggest thing you need is some friends to shoot with and practice with. My advice is to have as much fun as you can and try not to get involved in the my Equipment is better than your equipment. Using what you like/can afford and are comfortable with makes alot of difference. Have fun and shoot often.
With your current set-up you can enter in the bow novice and up classes. I started off in the bow novice this year just to get my feet wet and plan on jumping up to the hunter class next year after I can get my hands on a 5 pin sight that is lens compatible.