I will say that you need to go hold several and shoot some too, if you can. Find locals that shoot them, and beg/buy lunch/beer etc. Bring your own ammo.
shoot as many as you can.
If you want longer range accuracy don't get a super short barrel, as the velocity drops off the shorter you go. I really enjoy my Windham, its pretty good quality, and compares favourably to more expensive models, both in fit/finish and function. it also comes with a few nice perks like railed gas block, flared magwell etc. And a transferrable lifetime warranty!
I would also suggest maybe spend $1200 or so on the rifle, and then buy a decent optic, some mags and a couple of thousand rounds of ammo. If you buy the more expensive rifle, you might be tapped out, and have JUST the rifle. And you will probably want a stock, foregrip, iron sights, pistol grip, etc, etc. And these things go thru ammo like popcorn, so you will need lots. And to be accurate, you need lots of range time, both to sight it in, and to learn to shoot like that.