GuitarStv
Sock Market Trader
Pot values are a non issue. Just use 500k and be done with it. You can, always take highs away from the single coil. You don't have to ride the tone wide open. But then there's those of us who literally always leave their tone knobs on 10 and never touch them. Those are the folks that need to learn how to turn their knob lol because hums and singles in the same guitar is a non-issue.
You can use a 500k tone pot and just turn it down to 250k - exactly the same result as using a 250k pot. It's not that simple with a volume pot . . . turning down to 250k will not give you the same sound at all as using a 250k pot. Even turning down your tone knob to try to compensate won't give the same tone.