Dear Bubba:
Sounds like you on a great track. I have been buying S&W revolvers since January (now have a 617 6" 10 shooter, 686+ 4", and 629 Classic 5") I also have a Sig P220 Equinox and a P226 X5 9mm, plus my pride and joy: an Ed Brown 1911, Kobra Carry.
For the past few weeks I have been reading and studying up on AR 15s. My LGS has an ex-marine Snipper working there, (really a great young man - everyone's young to me, lol), who has been unbelievably helpful. Two points: 1) Don't rush and 2) find someone who really knows the platform that you can bounce ideas and questions off of.
After three weeks, I bought an LWRC AR 15 w/16" with sculpted barrel, Eotech 3X scope that flips out of the way and an aimpoint single 2xMOA dot, and a combat style bi-pod. It comes w/LWRC iron sights which are top of the line. Lot's of reasons why I did what I did, and lots of here's what you gain/loose, and a few don't go there conversations.
Was 3 weeks of great fun slowly getting informed and then seeing the final build this evening. It comes home in 10 days (I live in CA). The LGS and rep made a nice sale, I got a super AR 15 with a healthy discount, and the rep and I will be heading to the range to zero it in (now that's service)! He's cute too, but I'm old enough to be his grandma.
Take care and enjoy the journey,
Rachel