I think for a WDW setup you'd probably want the dry cab to be voiced pretty similarly to the wet ones...
4x12s abound - shouldn't be hard to find a used one.
Plus they're much easier to lug around.
You might try the ceramic split - sometimes with a beefy pickup that can give you a great neck tone.
For more humbuckerish character, parallel is an option too - and it'd still have full hum rejection.
A pickup like yours is likely hot enough that you needn't worry about not having enough output.
The original SVT wasn't just a bass amp; it was often used with the 8x10" cabs for guitar too. (No horn drivers in those, though).
I saw Johnny Winter using SVTs for guitar at Madison Square Garden in the 70s.
Pretty sure the Stones were using them for the Exile On Main Street tour too...