I have been looking into getting a 350 or 450 rifle and trying to decide between ar or bolt action. I have decided to go 350 in AR. I have found the ruger for 1050 in stock at 1 store. My money is a little tight and I was thinking of picking up a 350 upper to use on a windham weaponry AR I have and then buy another lower at a later date. What 350 uppers are considered good? I found rock river for 550, cmmg for around 700, and then some cheaper offerings from sanders and bear creek, Davidson defense, and AR stoner. Are any of these uppers good and is this a good way to go or should I just wait and buy the ruger. The rock river I was leaning toward because price is right and in a few months I could buy the matching lower. Thanks for any input on this i would greatly appreciate it. The gun will be used for deer hunting primarily.