1. I would no go back to a shop who told you not buy a bow yet.
It's never too early to buy it, (even if you don't hunt for a year or so)especially since you seem to be good sized already. Now as far as a good bow goes....1st gather up how much money you are going to be able to spend for EVERYTHING Basics for now is abow, arrows, field points, release, site, & bow accessories(basic limbsaver stuff)
Then go to a shop and shoot a few in your price range and decide from there. Hang out here for lots of great info.