Arrow length is determined by draw length and also what type of rest you have, meaning does it allow for some overdraw. My draw length is 29" but I shoot a 27 1/2" arrow because I have my rest set back almost as far as it will go. Short brace height or long,,, you still have the same draw length. A longer brace height is somewhat more forgiving as the string won't come as close to your bow arm, so it wont smack you as often, while a shorter brace height bow will be faster because it will have a longer power stroke. For hunting purposes I would go with a fairly generous brace height to allow for your heavy jackets and such. A fast bow with good brace height is ideal, its all a trade off, this for that, its all what you want to do with the particular bow. I consider 7" a good brace height for hunting purposes.
Fabs I would say no to your other question about feel of the bow. If you go to some of the small shops and maybe bass pro too, I don't know, they will be more than willing to swap out modules etc etc to get a bow in your hand that fits you, for you to try. I think you will be amazed at how different each one is to shoot, I know I was. There is alot to consider when buying a bow thats for sure. The link below has alot of info on bows check it out.
http://www.centenaryarchers.gil.com....Brace%20Height