Well, I've ruled out the 7.62X39 because I don't want to carry two different kinds of magazines. So I guess I must admit that the 450 Bushmaster would have to fit into this same category. So that leaves the 5.56 NATO. This AR is going to be strictly a "poopoo hits the fan/get home and defend the home" primary weapon. I will be focusing on a very simple red dot system with BUIS, a good quality MagPul QD single point or two point strap, a Levang style flash suppressor and that's it. I have MagPul Mags already but may just go buy a bunch more since it seems Cabelas has a never ending shelf chocked full of them for a reasonable price.
But you know, if my tax refund allows me two uppers......... Well then! That's gonna make things get interesting!