RE: Sig Kougar Build
sminucci...I think retracts will make this an awesome looking plane. I still building mine at this time, but without retracts. The only part of the build that require plans is when you glue the two halves together. With that said they're really not conventional plans. The rest of the build is by the manual. Parts got together nicely with a little sanding.
My only issue: SIG could have laser cut the tail pieces for easy removal and building. My Flight instructor/Friend had a band saw, so he cut my peices out.