How many are needed, how many are going, and what they're going for, is information nobody here has the even the most remote access to.
I have no doubt the level of Information Warfare we are currently engaged in would send more than a few folks over the edge if they had a clue. Without fail, every BS detail that is publicly released (by just about anyone) is snatched up and waved around to a) chase support for their personal cause and/or b) chase clout.
Just remember, they all think we're stupid.... so far, we do not disappoint. 
My opinion is based on the initial “plan” to change regimes. Of course we’ve been pelted with several different goals, I picked the obvious and extreme. It’s a large country with deep beleifs they aren’t willing to give up.
I’m just a common Joe with an opinion based on what we are told.
I have no “team”, it’s purely my own opinion. Both sides are stupid in their own way.
You have the experience and would have a more accurate perception.
But we haven’t succeeded actual regime changes. We clip the wings of chicken but never actually take the head off and eat it. Both regime change attempts are pure failures.
The way this is done is illegal in our country and international law. A lot of the world is going to turn harshly on this admin. Most are fed up with their nonsense.
This regime is not going to change out of fear of our “leader” like he/they seem to think. We have low IQ suits calling the shots on a situation that requires high intelligence. Even then its a gamble. Our DOD is run by a child intellect taking orders from a low IQ idiot
We just rewarded our enemy who is friends and helping our enemy. Our “former” allies are so psssed off they won’t help unless they have to.
Top it off, after bombing the school the people we say we’re trying to help are turning on us.
I think we could do it with less than I said IF those people had weapons, they don’t. We’d have to be the full force, IMO.
A European intel says 200+ American troops are dead, not 10.
Much like WMDs, no proof has been shown to justify this. Now we hear “gut feelings” of an idiot. Even if we pull out, I have high doubts Israel would. They get way out of control.
We have two keaders with very low approval ratings running this quagmire.