If you are experienced enough to do the rebuild yourself , just go for it.
Parts dont cost much in your part of the world , complete cranks and cylinders are much , much cheaper than over here.
Normally I would say just get a used cylinder off THAT auction site , but the Kawas before 00 , or 01 , used their own kind of plating , which was less durable than the others.
Maybe you can get a cheap 133 kit from Eric Gorr , or he can supply you with a fresh plated cylinder.
Be sure to inspect every gearwheel ,and all the bearings in the gearbox , while you are in there .
You will have a good , reliable bike for a season or 2 afterwards.