So here are my current thoughts:
We have to keep the shed roof because this will be our very first build so it has to be as simple as possible.
I want to widen the house and make it shorter, like you mentioned, but what I am struggling to find is information about building with roundwood. I don't know how wide I can go, using all roundwood, and still keep the shed roof. There are a lot of different factors that I am considering: diameter of posts needed, maximum length I can use (keeping in mind it snows plenty in Maine), and distance between the posts. The most important factor of all being: what do I have on my land that I can cut to build ith and still fit in all the the other factors. We have a lot of hemlock, which will be our main source of lumber, but there are plenty of other trees here.
Plenty of things to consider.
In the layout we drew up, we were going on the shorter side becasue we couldn't find great information sources to satisfy all of our questions. What we do know is that we threw together a roundwood kitchen in a day with whatever random pieces of wood we found and it is amazingly strong, haha. This thing has lasted, with a tarp for a roof, through 3 Maine winters. We didn't even have to clean the 2 feet of snow and ice we got in a single night, and it stands strong. Roundwood is an amazing building material, and I'm thrilled to build this way, but I don't have solid numbers to go as wide as would otherwise make sense to go.
I am going to do some more searching on the above mentioned factors and see if I can't find enough information to comfortably widen the house. I'm sure I can figure something out...
And I appreciate the help, Glenn!