I don't want to give away a lot of my design ideas, but essentially, I'm going to be building with walls rather than plates, like builder42's Valley Forge.
http://www.flickr.com/photos/yoderism/3228990250/
So if I build a plate-and-technic frame, do I want to attach this to the outer shell by a series of points? For instance, I have an outer rectangular shell, and inside, I have beams that meet both walls and a center beam for support. This seems to cut down the potential for interior, but I don't know how much tensile strength walls have after 100 studs.
Since this is a first SHIP, i'm going with exactly 100 studs, or close to it. Wish me luck.....
Thanks for any help.