Cool...so 500 watts it'll give up the goods. Gotta do a little amp head shopping - in the due diligence phase now. The plan was to use my RMI Basswitch/power amp, but as I sit here 3 months out from back surgery, I think I'd prefer having my pre-amp not on the floor in stomp form factor, which would require more bending real low than I might want to be bothered with. So I might sell it to defray the cost of a new head, or keep it for recording. It does sound terrific.
I read about someone mounting one of those big Whirlwind EQ pedals on a mic/music stand or something similar, here. If you like your setup except for the "floor" part, that might be a possibility. Good luck with your recovery by the way.