Help Epiphone SG capacitor question.

Loren Littlejohn

Lover of all boobage.
So I have this old G400 sitting around. It's in pretty beat condition but with my new found hookup I have decided to get it back up to snuff.

However the wireing is totally fucked. Potentiometers are shit so I plan to totally overhaul the electronics.

here are the questions:

I am putting 57 classics in it.
Machine heads are already replaced (done 3 years ago)
New wireing and shielding
The previous owner put a tune o matic bridge in it


Ok so here are the questions:
500k potentiometers whats the dif between these and lower ones?
What capacitors do I need for the tone knobs?

Thats it guys thanks, what would be great is if someone with a gibson SG standard could pop of the back plate and tell me what capacitors are used as well as pots.