Personally, for the same money as the Parker, I would get the Martin Saber. It is a more "modern" design and shoots much faster.
http://www.cabelas.com/cabelas/en/te...amp;hasJS=true
Going to a proshop and trying bows is always the right way to get started, though. They should make sure you get the right draw length, draw weight, correctly spined arrows, etc to make whatever bow you get shoot good for you.
Good luck and welcome to this great sport!