I'm building the Spacewalker II now. I have a small build thread going in the kit building forum right now also. The kit is pretty involved but the end result is beautiful. I've built 3 four stars, a Rascal and a few other smaller kits but this is by far the most involved one I have worked on. I am slower than most people and I have many hours over a 5 month period in mine. I'm almost done covering mine with more hours needed for painting and final touches. I have enjoyed the build quite a bit and the kit and the directions are both very good. I started with a partial kit so I can't comment on the wood quality but if its like the other Sig kits I've done then the wood quality is top rate as well. I am going with a ST 2300 nitro in my 1/4 scale so I can't comment on the larger 1/3 scale planes' engine requirements.