D/D bases and low rings, and your choice of scope is fine. I would seriously consider the Leupold 6X36 matte with LR reticle.

Anybody who seriously concerns themselves with the adequacy of a Big 7mm for anything we hunt here short of brown bear, is a dufus. They are mostly making shidt up. Crunch! Nite-nite!

Stolen from an erudite CF member.