Well it looks like I have pretty much settled on buying an IOR Valdada M2, looks like it will serve my needs, could be shorter and lighter but otherwise it is exactly what I am looking for in a 4X.
I want to mount this on a flattop with a QD one-piece mount of some sort, that will keep zero with repeated removing. So far it looks like the ARMS #35 with medium high rings will give me the most flexibility. One question though, are the medium height rings the right height rings to use? I want to mount this roughly 1.45 to 1.5 inches off the flattop, measuring to the center of the optic. Basically put it roughly the same height as the irons, maybe a bit higher.
I was also looking at an armalite one-piece mount, but wasn't sure they had one for 30mm tubes, would hold zero as well with repeated removing, and if the wider rings (fore-aft dimension) would fit between the diopter and zero knobs on the tube.
Are there any other options I am missing as far as a one-piece mounts go? Any other insight would be appreciated, thanks.