Recapping is usually understood to mean replacement of the filter caps which keep the power rails smooth and noise free.
The main power supply caps and what are called de-coupling caps are the important ones for this project. Basically small power filter caps that are placed physically close to the circuits which must draw from the power rails.
After this, coupling caps. A cap that blocks DC on the input. Elna silk bi-polar are sometimes used here, affordable good sounding. If you have a tube preamp, it will also have a cap on the output. That is often replaced by modders for different sound qualities.
I'd leave everything else alone. If you want to do more work than that, maybe what you should do is get a FirstWatt kit and build a new amp from scratch.