Everyone has their favorites and you'll get lots of recommendations.
I agree that you'll get the best deal in the classifieds. Don't jump at the first thing that catches your eye. Look at them for a while to see what appeals to you. Of course, if you have any opportunity to try before you buy in your area, try to do so.
Regarding length, if you go with a straight limbed bow, a 66-68-inch length would probably be best; a moderate r/d bow, maybe 64 inches; and a severe r/d bow/hybrid, 62 inches or less. 50# is a good starting weight for someone your size. 45# would also work and is plenty for deer. Good luck.