Do you shoot a lot? Can you live without your rifle for 3-6 months maybe more to get a new barrel spun up?
I had 3 custom rifles from gap and sac that all shot phenomenal and setup more or less exactly how I thought I wanted them. Then I sent my primary rifle of to get a new barrel. It sucked! Got it back days before a match no time for load development and I decided no more would I have a system that required sending off to a smith for a barrel, rather get a rifle so I can order a barrel ahead of time and put on myself.
I had almost bought a tl3 and started in on a project then I shot an AI for the first time. Wow! I was hooked. I no longer own any custom rifles I’ve consolidated down optics and bipods and have a rifle with 4 barrels all of which are under half inch and I can swap in 2.5 minutes. Latest is a 6x47 barrel from sac and none of my customs shot that well ever! After a few times shooting the two stage trigger I realized I liked it more than my 1-1.5 pound Calvin elites were. It may say 3.5# but it’s not a 3.5# that you envision such as an out of the box Remington 3.5 believe me!
So with the AI as a 308 the way it sits your options are wide open! Try getting behind one before going with a custom it’ll save you down the road!