A friend of mine has 'modified' his van with a DC electric winch and built a KB 'stand' that houses his KB, laptop, mic, and speaker all ready to go ... has two ramps that he runs the set up in and out of the van on and rolls it into the gig ... no worry about weight ...
I used to roll B3 around on dollies, in and out of the van by myself. Is all good till you hit stairs or a high stage. Uggggh, don't miss it