A little more progress to report for this weekend.
We fit the plywood top to the stand and cut out the hole for the bulkhead and plumbing.
We also took out some old ducting that led to what use to be a wood burning stove, yes-only in an ancient Sunset home.

I wish I had a photo of the before, but here is the new ducting above the tank area (duct closest to you in the pic).
It use to hang down another 8-10" with a trap door at the end of it. We should have had a mask and goggles on when we opened that sucker.
My husband ordered a few goodies for me this weekend, I will post pics when they come in ;D