Hi friends! I have recently acquired a rem 700 sps varmint. I have a vortex 6.5x20x44 I am wanting to purchase an mdt 20moa rail aswell as the MDT Arings. But with the 6-10 week lead time ordering from them I’d rather not order the wrong rings. My question is.. what height do I get? I’d like as low as possible. Thanks in advance.