RE: pse bows
I shoot a PSE Durango (bought 5 years ago) and as I recall the base price was around $500 as well. PSE makes some quality bows many in different price ranges but all will get the job done. I use a release so not sure about the bare minimum length for a finger bow.
Will tell you that before you purchase a bow try several out. PSE makes great bows but so does Matthews, Bowtech and others