I would go with the Gamma as well. parts will be easy to find for that. Not much to go wrong with the drop weight. You can get a stand for it and convert it with a Wise Tension Head when you get better at stringing. The resale on the Gamma will be better. Eagnas has bad customer service unless you live in the L.A. area. The other stringers look like they will need some work (busting rust, calibration) parts may not be available.
Babolat PDR Cortex Standard x 5 (Full Topspin Cyber Power 17 @ 52lbs)
Alpha Apex 2 + Wise 2086