Mine is almost the same, but I want to cut mine down to 10.5" with a Noveske 11" NSR and a HunterTown Arms surpressor! I'm not sure on optics, maybe a T-1 in a Larue mount or a 1x4 (Leupold, Vortex) in a Larue mount.
I go with a larue tactical and one of the reasons is Texas is on the lower and being from Texas kinda like it reminds me if home but it would be a m4 suppressed one. All black of course. That's just me a basic one as it seems