I love what you are doing. too bad we don't generally have basements down here in Arizona. Darn.
Don't make everything too accessible. Make it so that you do have to get up and walk around to do some things. Otherwise you might get stiff and sore. We all need the exercise.
Besides the electrical outlets I would include a place where a quilting buddy or two could join you and have mini-retreats. It would inspire all of you and strengthen friendships.
Way to go!