Georgia is a problem, because they have virtually no wage and hour laws of their own, and federal wage and hour laws do not state a specific period of time after termination by which final pay must be received.
For your wages, you can either file a civil suit in the Georgia courts (small claims might work) or a claim with the federal Dept. of Labor (although I've heard that the federal DOL enforces only to the extent of minimum wage).
Regarding, unemployment, file anyway. It appears that this employer was erroneously treating you as an independent contractor instead of an employee and I don't see any way you could legally be considered an IC. The state will contact the employer and ask him why no UI wages were reported and the employer will have to justify IC status (which I doubt very seriously he will be able to do).
Regarding SSN and address, there is no upside at this point in completing an application. Give him the information he is requesting in a letter. BTW, this is information he should have requested when you started, IC or employee status not withstanding.