Consider an "anti-rig"!!
A good preamp with a DI (SansAmp, VT Bass DI, Tone Hammer, MXR M81, Darkglass b7k) into a good powered PA monitor speaker (QSC K12, for example) can yield great results and get inside with one trip from the car. Not as sexy as that Ampeg 8x10 setup but once you learn...