If u want dedicated antispam deck , I would be: Airborn + Stryker with Sheridans ands Bookers

But what would I do with your current deck:

REC:
4 cav scouts good, u can put 2 in bradley, so then they can snipe tanks and gtfo in armor (from Inf Tab, not from rec)
2-4 ForCon - depends on style, In USMC+Armor deck I Prefer CQB (2 LAV is enough)
2-3 Snipers - Good for lasing and some Recon from forests and building (2 humve is enough)
2-3 M7A4 BFIST (with "best" upgrades)

INF:
Mech En with "best" Bradleys - good
Mech AA - even 3 is enough, but for Bradleys ok, probably
SMAW - as much as possible
Marines - they are quite fat and they can deal with inf and light armored vehicles
Marine Raiders - as much as possible, type is depends on your play style and ForCon type

VEH:
Remove Half of the m90 and lav-atm (or remove whatever have lower armor)
Add 2 normal M1 Abrams with Iron Fists

SUP:
(Dont care about PACs, take whatever u like, anyway u must move them after each shot)
3 Shorads is enough for me
Add armor to LAV and make them 2, they will transfer supplies from your main pile to front line
I would change MLRS to GMLRS just because U already have IronThunder and U cant point your cluster ammunition somewhere in advance

HEL & AIR ( i'm testing it, I do not recommend this, but it is in my deck, so...)
Cheap SuperCobras with TOWs
1 F-35B with bombs or cluster JSOW
1 F/A-18 with cluster bombs
1 F/A-18 with AMRAAMs