I gig a 100c for my blues band with cajon. I’ve even played a few gigs no-PA, competes with PA and Marshall tubes nicely. For the occasional bigger gig, where he brings the drums, i daisy chain 2 100C’s together. It’s very loud. I’ve even played that rig outdoors, no PA, with drums- and sounded great. Even got compliments from the bass-playing sound man
if I were in your shoes I’d get a 500c. Add an extension cab if needed (but you probably won’t need it.) get a 800 if you’re into modeling; but the 500 vs 800 will only net you a few dB more.
Rumbles are no joke!