I just bought a Tikka T3 Varmint in .223 and I'm looking to mount the Vortex PST 6-24x50 FFP on it. What are some good quality scope rings that would put this scope at the right height with the 50mm objective? Also should I go with the EGW 20 MOA base or the 0? I need a 100 yard zero if that makes a difference.