Question regarding infantry and defensive playstyle

I’ve been using double CAAT saber teams in conjunction with either reservists, stingers, or a CAAT javelin team. I find that they tend to struggle against more than a few vehicles namely due to ammo even when I drop supplies behind them. I also often struggle against blobs.

That being said I’ve got a few questions. (Let me know which you are responding to).

Is there a stronger combination of infantry for holding against both ground vehicles and infantry?

Is there a good way to use slower/long range laser guided ordnance on moving targets?

Should I abandon infantry all together and if so, what do I use in its place? (Needs to be semi cheap, resilient, and able to hold its own against an unupgraded m1a2 or three marine squads).

Has anyone had any luck with a Stryker centric deck? I’ve been messing around with the recon strikers which get bushmasters+javelin with some success.

What is the counter to short range infantry missile AA like verbas, iglas, and stingers?

What do yall use to counter blobs that is semi cheap? I’ve used the ac-130s with great success except in the case of autocannon and long range AA.

Has anyone had any success with big planes loaded with cruise missiles?

Can helicopters effectively defeat long range AA like the patriots and s300s?