Nice! String buzz is perfect here! Great tone.
For non-trimpot Tonepump, I just turn the volume on the bass down, then turn amp head up, and the Tonepump is not as strong. I don't know if this is exactly like dialing down the TP with the trimpot, but it works great - my sound guy loves me now, lol.
You are pretty good at planning things Steve.

And welcome to the Forte club!!
Wow! Well done.
Beautiful top there!
I have this one
Tascam US-122 but I have a windows 7 lap top and latency totally bugs me. I use Audactiy, used to use Acid Pro 7 - but way too complicated, I used the Apogee Jam with my iPhone's GarageBand. Works okay, but can't really edit and the interface is too small.