What's good for you is what works for you. I think there's this "false economy" where people using more PG are using lower watts, higher nic, and less e-juice. It's not the *juce* that's at issue, it's style of vape. I HAVE to use max VG in a lower wattage coil, and it gunks up some, but I'm not necessarily using more of it (I'm allergic to PG). People using higher watts, DL and lower ohm coils tend to go through more VG high percentage juice as they have to use less nicotine and are vaporizing a hell of a lot more per hit.
100% VG is fine if you're worried about the viscosity of the juice you can always do that, at lower nicotine, higher volume inhales. The more wattage and lower ohms you use seems to be what dicatates juice consumption, not the ratio, itself, though I'd imagine SOME PG might make draws easier and faster.
"Standard" around here in vape shops is to offer 80/20 p.g./v.g. and that usually works fine for most people, though you can have your ratio at wherever you want.... I don't think it's going to affect your juice production. Many ppl want SOME PG in their tank, even if sub-ohming due to flavor issues. I can't do that so I choose strong flavors, and vape VG only, and have been fine doing that.
Anna