How can I get this situation handled

It is a second degree felony and he automatically will score prison time; not jail - prison. You need to get him a lawyer and talk to his lawyer....

Without knowing the specifics, it probably would be 2 years from the filing of the report. But it would be impossible to find somebody willing to...

My question is above

Yes they can collect in in Florida.

Can Americans in my situation still acquire firearms in the state of Florida with a withhold adjudication on a felony charge

You should try to seal your record. You can possess a firearm if you are not a convicted felon. But it also depends on what the charge was.

What happens for bail stipulations?

They can drug test him or they could see him do it.

Is it possible for me to get my record expunged now ? Seeing as I had that charge sealed- Is there ANYTHING I can do ?!

You cannot get the new case expunged. You are lucky to get diversion on the new case. But a dismissed charge should not cause you trouble either...

Is he allowed to kick him out on one day? Or what must the father do

If he actually has been paying rent he cannot be kicked out with one day's notice.

How is this theft if im willing to give them the items back? What do i do? should i retain a lawyer?

If this is all there is to it you need to get a lawyer and fight it. That is not theft. And this should teach you NEVER to buy something from one...

Do I have a chance on getting medical weed in Florida and how?

Your question is more of a medical question. You need to find a good eye doctor to treat you. Medical marijuana is not legal in Florida. Of course...

How or more like can I remove this restraining order at least on my behalf?

You need to get a lawyer to help you. You did not mention how close you are to being 18.