Thanks to Chewtobacca's help, I was able to add Hairy Hen's new purist 5.1 mix to Harmy's awesome reconstruction. Yay!
Because of the size of HH's mix, the final files were just slightly larger than a DVD-5. I didn't want to bother with a DVD-9 and the layer break, so I had to run it through DVD shrink to get it to fit.
The final result is awesome!