I also suggest going against the popular opinion and go LaRue T1 with Absolute Co-witness. Primarily because even though you run flip sights, there are times where IMO - leaving the front sight in the up position at the ready is the way to go for instant close range target aquisition in varying light . With the rear sight folded down, you'd use the T1 as a big ghost ring. Its seriously fast that way. Also, lets say you were to grab the weapon at night in a "quickly evolving situation" where an intruder is very close. If the red dot is on a low brightness setting, the Tac-light you have mounted could possibly drown it out if you light up toward a white wall. The front sight would boldly show up in your feild of view allowing you to make a hasty shot if need be.
Either way –– the Aimpoint idea is a good call.
J223...