I can help on the lowering. Look up soupys lowering links. They are adjustable (to a point).
My understanding is the mustang seat will move you forward. Although i dont have personal experience with this seatGetting a new seat with a back rest support will bring you forward. This will prevent you from stretching for your bars and pegs. There are some on this site that said when they bought thier new seats, they were moved forward. Can't remember what brand they were.
What are you, 4 foot nothing? The Stryker is one of the lowest seating bikes out there.