I just ordered my CZ-455 Tacticool so I can start the .22-PRS style matches at my club. Before I order the wrong rings, I thought I would ask, What height rings for a 50mm Objective. MY buddy has the same rifle, but a 40mm Objective, and has a 20moa base, and uses low Seekins rings, and says he still has room between the barrel and the scope. I plan on running the Area419 CZ Scope riser/rail. Should I go with the Lows or the Mediums, as the Are419 raises the whole apparatus?