I'd recommend getting a decent factory rifle. Even used, as long as it's factory, your doing well. Shop used on FN, Colt, BCM. All of these are a good "Middle Class" rifle.
You can spend more: Daniels Defense, LMT, KAC, Larue, Noveske; but at the end of the day it's still an AR. Yes, the second string of brands makes a "better" rifle, but define better?!
When it comes to the AR, we really are starting to split hairs here. I wouldn't spend and extra $1000 for something just "slightly" better. As long as it was built by a company that has built guns for DoD, I am good with it. My "Go To" rifle is an FN. I would grab it to defend my family 10x out of 10x and never say "Wish I had an LMT right now."
Buy a used FN or Colt for $1000. Spend another $1000 on an ACOG and get a $120 Streamlight ProTac flashlight and you're good. Don't forget about ammo, mags and most importantly TRAINING. For training, Valor Ridge is whom you seek.