I finally got some time to solder some parts onto these boards. I'm making a matched pair.
I made a few changes to the BOM: I subbed in my favorite Nichicon UVZ electrolytic caps where appropriate (they are rater to 105C), and replaced all of the resistors with the Vishay RN55D series of epoxy coated precision 1% resistors. I went with the Styrene caps and mica's along with Dany's recommended Wima's.

I started by labeling all of the parts by reference designation so I could keep track of where I was:

I clamped the boards into my Panavise PCB holder jaws and started soldering in all of the resistors:

I checked the values as I stuck them in to make sure Mouser didn't mess anything up when packing (totally worth the extra 15 seconds per part to save headaches later!):

Pretty simple just going part by part, soldering and clipping each pair of boards:

A little electrical tape holds in devices that want to fall right out, like the Wima caps and electrolytic caps:

And the B boards are stuffed:

For the bias resistor R11, I cut off one outside leg, then bent the other two to fit the layout, then dialed them up to 25K maximum before stuffing them in:

And finished up the rest of the components:

Somehow I messed up my Mouser order and ordered 51pF mica's instead of 560pF styrenes, so I'll have to wait until my next order comes in before I can move on to biasing and stuffing the rest of the components.