If you switch pup, then you are limited to only 1 sound for your solos.
You can do a volume boost, not too much... just enough to be heard easily. Not need to be heard above the rest of the band, if you know what I mean. You can get an MXR Microamp for volume boost purposes... or get an eq pedal.
Changing your tone is also fine, provided you like your rhythm tone AND lead tone. I know I like to have 1 basic tone thru out.