Re: LMT MWS & CQB (Optics choices for each)?
For my CQ carbines I like a 1-4, the new Vortex 1-6 looks like a sweet piece of kit for around a grand. I have a Millet 1-4 that was barely over $200, works great at the range and a bunch of the local 3 gunners are running them without issue. Having the 4x will nice for taking the occasional longer shot. My "nice" 1-4 is a Vortex, the ACOG is much better but I am having to spread out my $$.
I run a NF 5.5-22 on my MWS. It is SFP but I like it anyways. If you want to stretch out the 308 I would get something with 20+ at the high end at least. For me at least, I don't consider it "overscoped". I have been out to 600y and I prefer the higher power. Especially if you shoot solo a lot. I spent several months narrowing down my optic choice for the MWS and my short list was:
S&B PMII
Bushnell DMR
NF
Viper PST FFP
The NF was the only SFP I considered, but I preferred the MLR reticle at max power for attempting precision shots. I was also able to purchase 2 for the price of the S&B, so daddy got a backup DMR. These opinions are from someone that just shoots for fun-so take that FWIW.