I finally got it all put together and it sounds AWESOME! It nails that vintage Weir tone, finally.
Here's the gear. Starting from the top down.
Furman Power Conditioner
Peavey Super Festival F-800 B
Custom Cab 2 x 12" 16ohm Hemp Cone Tone Tubbys
Ibanez AR-400 Artist, Super 80 pups, with Trisound "trisound is key"