so I've got a similar build already set up
Mine is a Kac 16inch cut down to 14.5 with pinned surefire
I bought a kahles for it a long time ago, k1-6 with the discontinued SM2 reticle
In general I prefer a mil based reticle and don't get lost with it. Just have to take the time to memorize the reticle and practice with it. Used to run a vortex 1-6 w/ the jm-1 bdc
mine is in a 1.70 mount with an offset ACRO and i am super happy with it
it was in a 1.93 and i prefer the 1.70 mount height
I looked at the new 1-10 Vortex and overall for my uses this primarily set up for up close to a few hundred yards out, so the lighter weight and great kahles glass keeps it on my rifle
But if I can ever source a hodge lower, upper, rail and other accessories to finish my 12.5 build then more than likely the K1-6 setup will go on that gun and i would put a 1-10 on the 14.5 as i would be in the market for a new optic
but over for what you are saying i would go k1-6