If I had the money to buy a new Hoyt, I would. Actually, I have 2 Hoyts, but they are both more than 20 years old, and if you want to get into long ata, my medalist is 4 feet. The other, I use for bow fishing. I got both of them for free three years ago and they work great. The target bow came with an old sure-lock scope with a 2x lense. I shot a 279 with that setup with only one year of experience and got board with spot targets, even competitions, so I looked into 3D and hunting. You may be surprised to hear that I shot a 282 with my current setup and I think that is great for so little practice. The 82nd is a great bow for 3D, perfect for hunting and ok for the occasional range challenge. I try not to think of 3D as a spot target type competition, rather, it is more of a hunt to me.
There are speed limits on set-ups for these type of shoots. You shoot your bow through a chrono and if it's not within that limits, then it's time to start tinkering to meet the criteria set forth. In all honesty, an 82nd really isn't a "target" bow to begin with. It's more of a "thrill-seekers" rig. Get into something with an 8" braceheight that is shooting low 300, maybe 310, with a long axle-to-axle, and then you've got yourself a "target bow." Be that a Hoyt Pro38, Matthews Conquest, or whatever. Not saying you "CAN'T" shoot it like a target bow, but it's really much more designed to be a hunting bow, less forgiving, more speed.
You're still young (no offense intended, as I can somewhat understand where you are coming from, having been there myself), and there is a great deal that you can and will learn about archery, competitive shooting, etc. Keep asking questions as you will only gain more and more knowledge, which will eventually make you a better archer and hunter. I know in the 4+ yrs. I've been involved in various hunting forums, I've learned a great deal about different equipment and techniques, tuning methods, etc. It's been and enjoyable experience and one that I wish I could have had when I was your age. Then I could have foregone all of the MANY stupid ideas I had and learned from others' experiences, be them good or bad.
When you say 300 and 310, do you mean, that is ideal, or that anything more than that would not be allowed in certain classes? Remember, I am trying to stay in the hunter class because I would not be competitive in the unlimited class yet. Need more practice! Although, I think I could make it in the unlimited class eventually with this setup. What I need to know is if I need to decrease the poundage to meet asa shoot speed limits, if they exist. Please let me know.
By the way, I decided that five pins is not enough for me or my bow, so I got a completely different sight. I opted for the HHA sight in my signature. It's best feature in my opinion is the tool-less adjustment. Plus, I can mark it out as far as I could possibly want to.