RE: Sig Kadet LT .25
I've got one ready to cover. The only thing about the build I can recommend is to lightly sand off the nubs that hold the parts in the sheet where it was laser cut after you break them out, so the pieces fit together better. This mostly concerns the wing assembly.
Really one of the best kits I have ever built in terms of design, wood, and fit. Since I have put models together for about 50 years, that might be saying something. I'm not too keen on the tailwheel tiller, and the tank should have been placed slightly higher, but overall it is an easy build.
I'm going with a ST.29 with a 10-4 prop to start with.