TLDR: Lollar regal for JM wide range humbuckers, bit keeping the rhythm circuit; Go with 500k pots to suit the regals, or stick with 1m pots to suit the rhythm circuit?

I’ll try my best to keep this short. Always loved offsets. I have several, but they’re HH, they’re down-tuned, and some are active p-ups for the heavier band I’m in now. 

I’ve tried several ‘traditional’ Jazzmasters in the past, but I always moved on from them because the jazzmaster sound wasn’t suiting what I needed. Now that my guitar inventory is pushing 20, I have everything I need from other guitars and I can just let the jazzmaster be a jazzmaster, and I’m building one from an MJT body, descendant vibrato and mastery bridge. (Still sourcing a neck; looking for aged to match the mjt body, but I HATE dot inlays, so the hunt continues) 

Here’s the rub. 2 things I don’t have in the current inventory are jazzmaster p-ups or wide range HB’s, so I’m thinking about building it as a blaster with Lollar Regals. I know the common logic would be to go with 500k pots for the wide range, but I would like to maintain the rhythm circuit. Is the rhythym circuit still reasonably functional with 500k pots, or is there an advantage I’m not thinking of by sticking with 1m pots and rhythm circuit with the regals?

Thanks y’all!

Wide range jazzmaster, what do y’all think for pots?