In the abstract, it’s not a bad idea. However, it’s clearly not feasible.
The three solutions are:
Gradually continue to increase the retirement age
Double the earnings limit
Modestly increase FICA taxes
None of these are permanent fixes, but they will keep things solvent until a permanent fix can be installed.
Two of your suggestions involve large tax increases. They will be permanent tax increases. The conservative approach is to privatize the system. Allow people out of the system if they forfeit benefits. Provide incentives for people to work by eliminating payroll taxes and reducing benefits.