I want to start a new AR build. I learned a lot from my last build which was a mid-high end build using VLTOR upper and lower and a lot of Barnes parts. I want this build to be done right and using the parts I really want meaning it will end up being a high end rifle. The problem is I went ahead and purchased a RRA lower on a whim one day before the election when I thought Hildabeast might win. Do I just build a mut rifle and be done with it or do I go ahead and start building what I really want and possibly switch out the lower later.