I think what I'll end up doing is:
new fork
new ball
1mm shim
new oem slave
act sprung 6 puck

save the southbend disc for when I need to resurface my flywheel down the road. Any tips for storing a kevlar disc? What is the maximum step height you can go before you need to replace the ACT streetlite flywheel?

Thanks to everybody so far for the great input into this. Really wish this more out in the open or else I wouldn't have dicked around with mixing and matching pp to disc and stayed purely with one company or another. But as Reza said, I got caught up in the hype and didn't hear anybody say anything about any negative consequences running this combination.

edit: Like you Reza, I love my clutch to disengage near the top of the peddle. I don't need to brace against the floor while waiting for a light change - I've come to accept my legs are the strongest muscles I have...especially after so many years of track and field and volleyball.