What I have:

2015 10 FCP-SR in 308 Win
-Accurate Mag DBM (factory Savage DBM inlet)
-Accustock
-Accutrigger
-Top bolt release
-Small shank
-Smoothe barrel nut


What I believe I want:

24" 1:7 twist 223 barrel
-AICS 223 mag
-Stock with adjustable LOP (spacer method is cheap)
-Castle style barrel nut

I believe I need:
-Complete 223 bolt head - probably on the classifieds here as a take-off
-223 go gauge
-barrel
-Action block or barrel vice?
-Barrel nut wrench to tear off the smooth nut and put on a toothed one because I imagine the smooth nuts are a PITA


I think that's all I need. I'm clueless on the tooling to use. What's cheap?