Figure out how to address the space problem, and realize that a lighter bike is easier to store, too. It's still a bike but it's liftable and you could even pop the wheel off if you found the right corner in your abode. Think creatively! Maybe there's a rack that can go in that middle room that can handle all three bikes!
40 pounds *loaded* isn't over the top ... but it is holding you back a bit. My Xtra is 39 pounds unloaded and I have taken it on week-long tours that included a century, and had a pleasant time riding with the folks who cruise at 14-16 mph. However, I prefer the aluminum bike for that Saturday metric or riding with the faster guys (except at the beginning of the season when they're out of shape ... I *think* it's easier on their egos )