Thanks for the comments and views! Here's the ACU update:
One squad, plus a sniper team, an M-60 (or whatever it is they call that gun these days, modern gun nomenclature just won't stick in my head for some reason) team plus a platoon leader and his RTO. All Caesars except for the the SAW gunners, the LT and the RTO, who are Elhiem.
The pics:
Platoon commander+MG team:


Fire Team A:

Fire Team B plus the squad leader:


The sniper team:

Group shot with the 3-tone squad:

This gives me two full squads, an MG team, a sniper team, plus a platoon commander--plenty for Force on Force, considering the beat-down one squad of well-equipped d8 troops can give the insurgents! I might get some vehicles at a later date, an Abrams for its brutal sexiness, and a Stryker and MRAP or two for their coolness.
How I painted ACUs: basically, I took the tutorial put up by Elhiem on this forum and modified it for my available paints. All colors are Vallejo unless otherwise noted.
Base: Deck tan
Cover uniform, helmet, and gear with splotches of grey-green (or green-grey, can never remember the damned vague Vallejo paint names, but it's the light, nearly grey color)
Blend olive-grey with grey-green, approx 1:2. Overlay splotches of grey-green with this mixture.
Go back and paint small splotches and dots of deck tan within the grey-green and mixture areas; this helps make those splotches "digital" in appearance.
Paint guns, goggles, nightvision black
Paint flesh tones
Boots are khaki grey
Give the whole thing a light drybrush of deck tan
Bases done the same as my three-tone guys.
I think this is a fairly effective ACU pattern, especially at arm's distance.
To mix it up, I gave some of these guys equipment of different colors/camos: A few woodland-pattern vests, some NATO green or Khakhi Grey pouches/water bottles/etc. Most of my games will probably be placed in the earlier years of the Iraq War, anyway, and there's photographic evidence aplenty to show that US troops had, at times, some pretty mismatched gear.
Thanks for looking!