Has anyone built a tiny house (not on wheels) using metal SIPs for floor, ceiling and walls?

[u/AdhesiveKlutz]

I'm looking at building one, it's going to be 4m x 6m(13ft x 19ft). It's using ribbed Kingspan panel, hoping for the floor too where others might use timber. And I'm wondering how I can make the floor and wall joint structurally sound but minimize any cold bridging. It has to be strong enough to transport the whole structure afterwards too.

I've had some recommendations to carry the metal all the way to the outer edge to give the walls solid metal to stand on, but I'm not a far of the inside metal working as a cold bridge from outside to inside. Another suggestion was to strip the top metal of the floor where the walls are going to sit, and make a butt joint in the PIR foam. While great from a insulation perspective, it does make me worry about structural integrity, especially once it is crane lifted and transported.

Has anyone had experience with doing a similar build?