i have gigged with drummers on my 1x15 80W combo lots of times.
It's not a problem. You just have to serve them some beer first.
Anyway, if you want a practice amp, I've got a lot of fun with my Roland Cube RX with 4x what... 2" in it? 2.5W power, battery operated. It sounds like a toy, but it actually sounds like a decent amp. OK, you won't kill a drummer with it unless you smash him over the head with it, but.... that's why i've got my Genz Benz Shuttle 6.0 2x10+1x12 *lol*
EDIT.... And the Shuttle 6.0 was not to smash the drummer over the head with, though...
It's not a problem. You just have to serve them some beer first.
Anyway, if you want a practice amp, I've got a lot of fun with my Roland Cube RX with 4x what... 2" in it? 2.5W power, battery operated. It sounds like a toy, but it actually sounds like a decent amp. OK, you won't kill a drummer with it unless you smash him over the head with it, but.... that's why i've got my Genz Benz Shuttle 6.0 2x10+1x12 *lol*
EDIT.... And the Shuttle 6.0 was not to smash the drummer over the head with, though...

A bass with out a drum is only 1/2 a rhythm section.

Did you install a High Z and Medium Z pair, or did you do something else on the Warwick? I am assuming that the Qs dropped right into your Thumb without any routing. How do you have them wired now?