I have a 6.5 Creedmoor in a Ruger American Predator, and I also have the ballistic twin 260 REM in a Ruger M77 Compact. I reload, but I always buy a few boxes of factory Ammo to get my initial brass, My creed did very well with the approx $20/box American Whitetail 129 gr Interlock (Hornady). I also shot a box of Hornady Superformance 129 gr SST, but they were a tad less accurate than the American Whitetail. My current handloads are Speer Hot Cor 140 gr with H4350 powder.
For scopes, most of my guns have 2-7X35 scopes, my 270 WIN has a 3-9X40, and my Creed has a 4-12X40 in case I want to hunt over an open field. Honestly, when I shot a coyote and two does with my Creed last fall, I really wish it had the 2-7 on it. I see deer within 50 yards more often than over 200 yards, and the extra field of view of a low power scope is nice.
Brand is a personal preference. I try to stay in the $200-$250 price range. I like Burris and Leupold best, And Nikon, though the Nikon is slipping a bit on my list. I'd like to try a new Redfield or a Vortex, but since I have no personal experience with these, I won't rate them.