Hi McSaw, ya, I could probably fit right in, I always wanted a "Lil Gray Shack in the West", though, so was practicing for my new abode.
Hi Rob, yes, with the short log construction, also known as "piece on piece", additions can be added at any time by simply extending off the posts. I would think that one could build a 700sq. foot cabin, alone in under 3 months, given that they had the wood local and were good with a saw, square and plumb bob.
Heres a pic of the " Beam Machine", I use to sell them on Ebay till others, including the guy that makes them caught on.
John