Depends on what the felon was charged with.
Personally I am unfamiliar with the LA statute but in many (most?) jurisdictions whether it is classified as a felony or a misdemeanor depends on the dollar amount of the property in question. (e.g.: possession of a stolen tricycle would be a misdemeanor, but possession of a stolen truck would be a felony)
Yes
If the possession charge was a felony, no, it is not legal to own or possess a gun.
Maybe - maybe not. If the gun was involved in a violent felony and you are in possession of it, yes, you could be charged with that violent felony. Even being IN a car with a gun places you in, what is called, "concurrent possession" of that gun.
no
Yes.
In most states it would be a felony.
Yes, and it could be a felony.
It depends on whether it was FELONY possession or MISDEMEANOR possession. If FELONY, no, you cannot ever again own or possess a firearm.
This is a felony crime.
You need a lawyer for a current, legal and correct answer for your situation.
No, even the possession of a firearm of any kinda is a felony.