You should definately find a good shop that can get you set up with proper fitting equipment, also if you are new to archery I highly recommend that you try to find someone in your area who is an NFAA certified instructor to help get you started in the right direction with your shooting form. If your unnable to find an instuctor close by, a book which does a pretty good job covering form is: Archery steps to success by Kathleen M. Haywood and Catherine F. Lewis.

50lbs draw weight is plenty for whitetail.