TKGL, the tru ball will work well. Like any release set the length and sensitivity to your liking once you make the purchase. Most releases have a good deal of adjustability in the amount of distance the head is from the wrist strap.
The metal nock could easily be replaced with a loop that wouldn't cost you any more than a cheap cup of coffee.
One of the many negatives with the metal loop is the metal to metal noise the release can/will make with it when hooking up. If there is a deer in close proximity it could tip him/her off.