Florida, will not give you an Order of Executive Clemancy since your conviction was in Illinois.
You will need too check on Illinois State laws, but I doubt you can even file there, since you are a Florida resident now.
You would have too move back too Illinois.
As a convicted felon, living in Florida, You can legally own a recurve, or compound bow, any flintlock rifle, some of the ball and cap guns, I think the in-lines are out, but the rule of thumb, is if you don't have too go through the back ground check you are ok, the real exception too the rule, is C&R curio and relics cartriage guns, and a private transfer of any real firearm.
As for your spouse owning a firearm, it is thier right, and Florida will not infringe on that right, however you are still a convicted felon.
You do not have the right too "Own, Use, or Possess" any firearm.
If, and I say if, there is ever any crime under investigation at your residents, the firearm may be concidered matiral evidence, and subject too finger printing test.
If your finger prints are on that firearm, you could be charged with possesion.
That charge, under the Florida statues can land you 15 years in a Florida prision.
5 years for the possesion charge, and an additional 10 years for the
10-20-life law that Florida enacted about ten years ago.
Be very wary of advise you recieve from anyone who is not a lawer, and well versed on the law, in this matter.
You do have too register as a felon in Florida, some states only register sex offenders, but that is a little law, not talked about in Florida.
It is a way too "Stack" charges against a defendant.
I have a friend in Tallahassee that is a criminal attorney.
If you are close too there, PM me, and I will give you the contact info.