I'm currently having a 7mm RUM built on a Remington Model 700 action with a lilja #5 contour barrel. I've also got a Leupold Mark 4 8.5-25x50 that I'm going to install. I've been looking at the rings and bases for the scope, and was wondering if the Warne Tactical's would be alright, or if I should spend a little more money and get the Nightforce rings and bases? Also, do any of you guys have an idea on what height rings I should get? I plan on getting a 20 MOA base. Thanks.