It's been a week or so since I posted my last update and I've made some good progress.
I got all the Mianne Benchwork put together, squared it off and leveled it. I had a few days delay as I forgot to order the spiked furniture leg cups to protect the carpet (which held up the leveling) but fortunately they were something Amazon was delivering right away (go figure!) So I have them in place and I'm in the middle of laying down the plywood and then the Homasote.
I'll post some more pics when that's complete.
First is a walk around the benchwork video then some pictures during its installation and squaring it up.
Here's some photos of it during installation. Any distortion is due to me taking a panorama.