I would go with the Kinetix 800 and (2) BA2-112-3 cabs. This will give you a nice compact rig with clarity, punch, with a nice bottom end and great dispersion on stage. The Kinetix 800 can get you any tone you are looking for and some nice options to control boominess on stage with the lean switch. It is extremely useful. Ask me any questions if you got them.
Funny you should make this suggestion today... I just corresponded with Jeff via email and he had the same suggestion. That was actually my first inclination when I decided to go with a Genzler setup awhile back, before I started questioning my choice. I guess the moral of the story is don't second guess yourself!
So, I should be getting just that setup within the next couple weeks. Looking forward to it.
Just as a sidenote, I had a chance yesterday to compare one of my own Fender Rumbles (100) with an old SWR California Blonde (an acoustic amp that lots of bassist use for bass as well). Again, I don't have anything bad to say about my Fenders. They've been great. BUT, when comparing side by side in a live band setting, the SWR made my Fender just sound muddy. The SWR was so much more clear and detailed. I didn't realize the Fender Rumbles had so much of their own "sauce." I far preferred the SWR's sound. And this was while playing one of my Spector basses. I assume the Genzler amps and cabs are much more detailed and "true" like the SWR when compared to the Fender amps. But then, with the tubes in the Genzler Kinetix, I can always get that more "warmer," tubby, or overdriven sound if I want it.