Hi Bottle,
It sounds like you and me are in the same boat, maybe at different ends but definately the same vessel!
I am playing A,D,A,D,G for Beat the red light (they dont let us in churches!)
I was struggling with getting enough power for the lows and also lugging a ton of cabs about with me, my solution is on order as we speak...
1XBarefaced Big One cab
1x1k power amp
1xSansamp bass driver pre amp
I will let you know how it works when ive got it all delivered and tested out.
Cheers,
G.