Thanks for the compliment re: the stand. I went out this morning to inpsect the pain and can now declare it complete! (except for painting side B of the doors - that will be complete later today.
We are going to put the RO/DI in the laundry room at a place where there used to be an old sink. The line will be run off the old water supply - we are getting an adaptor and valve to go from the orignal line to the 1/4". The drain will go directly into the exsiting drain.
Today I am hoping to pick up a few items to begin replumbing the tank. The previous work on this used tank was really ugly.
The challenge that we are now facing is that Deborah is suggesting that we switch around the family room and living room - which means moving (again) the freshwater tank, moving a piano

and all the other furniture.
I'm voting for keeping things as they are!
