Ditto to Sonic’s reply.
In regard to testing cap values to hear the differences, LP’s make this easier than say a strat because of access to the control cavity being in the back.
You can connect caps of various values with alligator test leads to the appropriate pot lugs, play the guitar while adjusting the tone(s) up & down, then clip in the next value and so on.
Once you hear what you like, solder it in and Bob’s your uncle.