Expect occasional feeding problems when shooting 7.62 in a rifle chambered in .308. Nikon scopes are excellent scopes. I prefer mildot reticles. You might wish to consider this model:
http://www.midwayusa.com/product/368918/nikon-m-308-rifle-scope-4-16x-42mm-side-focus-bdc-800-reticle-matte . The reticle is calibrated for the average .308 round drop at different distances and makes it much easier to put a round on target. Even the less expensive Buckhorn model in mildot is a very good scope in the 4-16 magnification range and is pretty much made for the .308. Nikon has a great ballistics calculator at their website you can use to print out a chart for their scopes and your particular caliber.
The 700 is a great rifle. Take the time to research the models (visit the gun store and talk to folks); get the one which stands out to you - NO regrets.
The ability to reload is the way to go these days and I expect for the foreseeable future.