If you are in the market for a $2k optic, here's a possibility:
http://www.elcansightingsystems.com/...ole_sights.php
I have an Elcan Specter DR 1-4x in 5.56. It was worth every penny. The 1.5-6x 7.62 optic looks like the perfect match for what you are planning on doing with this rifle.