I suspect you're in the throes of a bad attack of [u]Gear Acquisition Syndrome[/u]! :eek:
You have a great new tube amp that delivers 22 Watts into a 12" Jensen speaker. That's a veritable tone fountain, man! You do [u]not[/u] need more/bigger amplifiers! If you get a gig playing a stadium, just put a mic in front of your amp, and let the soundcrew deal with it.
Getting new gear is more exciting than doing the hard work of finding the right settings to nail the tone you're looking for, but that's part of the discipline that making music demands. Do some serious woodshedding with the rig you have now. Get as close as you can to the sound you're trying to achieve. Remember, most of your sound comes from your [u]hands[/u]. If sounding like Jerry Garcia was as simple as buying the same gear, then [u]anybody[/u] could do it. Every Dimebag Darryl wannabe could buy the equipment he endorses, and we'd be deluged with dime-a-dozen-Dimebags!
I think you may be looking for a 'magic solution', and the ironic thing is, [u]you[/u] hold the magic! Your musical future is in your hands.... literally [u]in your hands[/u]!