That looks a lot like what I have planned for my version of a DMR.... Except I'm likely going to go w/ 6.5 Grendel just for the extra legs. The plan is for it to be a 1000 yard gun. There's a range here that has a 1000 yard firing line, and I really want to learn to make hits out to that range. Considering I did 400 yards w/ my Garand w/ irons (prone, slung), I feel comfortable that I can do it. Plan is for a 22-24" barrel, probably go w/ the Magpul PRS stock, but otherwise it's pretty much gonna look like yours.... Should be a helluva lot of fun.