suse1023 wrote:
...snip...what do you folks live in if you're not still in the 'big house' and not in your rig?...
900 square foot cottage. Feels huge when we get here in the spring, and small when we leave for the winter. We jokingly say we live in Barbie land. Everything we own seems to be 2/3 size and does double duty so as to minimize space consumption. I admit it is very liberating to get rid of "stuff".
The link to your "tiny house" is adorable, but I think you'll find it impractical after a very short time. Just the simplest of daily tasks will become difficult. Washing/cooking/storing dirty dishes in a shallow one hole sink will get old. Works great for coffee cups, but not much else. Limited space to store dirty clothes yet alone wash them will be another issue that will need to be resolved. As pretty as that place is, you really will be just glorified camping. If you're young and adventurous it can be doable for a short run. Even Thoreau left his cabin after 2.5 years. Yet 160 years later there are many that dream of doing the exact same thing he did.
The loft area is very cute, but if you do move the house you will have to take it completely off to fit under power lines and bridges. That alone will be difficult job.
Good luck, just leave yourself some exit room if things don't turn out the way you had envisioned them.