The only thing you are missing is a better way to mount an Aimpoint. The RRA so called "tactical" carry handle creates more problems than anything else. Using it you automatically exclude yourself from forward mounting an Aimpoint. Forward mounting is more advantageous because it clears your field of view, makes 2 eye open shooting easier, makes target/reticle acqusition faster among other reasons. In additon, the only Aimpoint mount that can be used with the "tactical" carry handle is one of the worst/weakest Aimpoint mounts on the market. So... you take RRA's tactical carry handle, (which BTW is neither tactical or a carry handle) and you have an Aimpoint which should be mounted out further in a mount that is inferior to almost anything else you can get.
There are many choices, I want to say that again, MANY CHOICES on how you can mount your Aimpoint. Many of them will work. Using a RRA "tactical" carry handle will work, but almost anything else you can get will work better.