Just an idea, but for not much more than what you want to spend used, you could get a custom Low Down Sound (LDS) 2x10 made. The cool thing about this is that you could use the stock Eminence Neo 10's, which would sound good and make the cab very lightweight for schlepping to rehearsals), and also Don (the cab designer) could move the tone of the 2x10 cab a little closer to the tone you like (a big sealed multi10) cab through porting and also the use of a small paper cone mid driver (or maybe no crossover at all) versus the standard 'treble oriented' tweeter in most 2x10's.
If you go with the standard Eminence Neo's and the standard carpet cover, Don's 2x10 prices are quite amazing.
If any of this sounds interesting, call Low Down Sound (email is not so good with Don). He is GREAT to talk to, and he totally understands the 'vintage' sort of tone requirement.