But here's a thought: Consider your existing house carefully and investigate in detail before taking any action. I don't know from your posts how much you know about design of habitat shells, nor what you may have already done.
The glass is neither half full or half empty. It is too big. But this tiny ad is just right:
Solar Station Construction Plans - now FREE for a whilehttps://permies.com/t/138039/Solar-Station-Construction-Plans-FREE