RE: SIG Kadet LT40 - ARF or Kit
You cannot make a better choice for a trainer than an LT-40. Sig was an early leader in setting industry standards for quality build manuals also. Build manuals and in the case of arfs assembly manuals are arguably the most expensive thing that goes in the box of any new kit or arf if its up to modern standards. Also consider the LT-40 or the Senior Kaydet are simply the best first airplanes for float flying if you should so choose.
John