So. Close.
I can practically taste the salt water:
Except for the doors (which you can see stacked on the other side of the tank in the office) which will be hung last to give us as much room as possible to work, the enclosure is finished from the builder's point of view. I had no idea the p-trap they needed to install for the under tank drain was going to be so obtrusive and obnoxious, but after I took this pic I had them to re-work it so that it's not jutting out directly in to the cabinet space.
I'm hoping to start the plumbing this weekend. I am losing my mind with anticipation.