Get yourself an ADM quick release mount, they are built very well and hold zero very well!
I have 4 of them on different optics currently, 2 Aimpoint Micro's, and Leupold deltapoint, and a Vortex Viper PST4-16 on my bolt action rifle.
The height is of course up to you, they make them in super-low (for shotguns etc...) absolute and lower 3rd co-witness and cantilevered out front.