Very nice website, kermit.
Also, welcome to the addiction. I will venture a guess you'll end up with a 16" flattop in the near future. That was my progression anyway. I got my first AR, a 20" Bushmaster A2 HBAR, in August of 2002. I then got a Bushmaster 16" A3 upper and built an Eagle Arms lower.
Somewhere down the road I decided a RRA Varmint upper was needed, so I built a RRA lower with a Jewell trigger and ordered the RRA upper. Well, the upper isn't here yet and having a lower with no upper in the safe was killing me. So I bought an A3 RRA upper with a 20" government profile Bushmaster barrel.
I imagine as soon as the RRA upper gets here I'll end up building yet another lower.
Are you seeing a pattern here? These things are worse than crack. [:D]
Again, nice site and thanks for sharing your experience.