Chris,
Sorry I have no info on the first couple of questions but I too like the planes in the .10 to .25 size. I have had the most success finding out of production kits either here at RCU or Ebay. I have obtained a Marks Model Sunny (.15 powered Bipe) a Parker Pelican ( .10 powered low wing sorta homebuilt looking) and several plans as I like to scratch build. You are right though, not many kits in this engine size. As a matter of fact compared to ARF's there are not many kits in any size![] Do what I do. Look through the old RCM's. Find a kit that interests you and do a search at RCU or Ebay. I get emails from ebay when a kit I am looking for comes up for sale.