Why not get hold of the plans somehow and have the kit made here?
Where we live we have a really good lumber yard with ALL the tools required.. Band saws,Top/bottom planes..Name it.
You would save a fortune and get the same thing..
Might be even better!
My house is made of wood,bamboo,nipa etc.. 7 years old with no problems with termites..
There are certain wood treatments that work here really well.. Perhaps we can go over them as the thread develops.
Best wood where we live that is relatively termite proof is called Gemilina..(a bit like teak)
It is listed on that site that Graham listed BTW.