investing in property development in vanuatu

Hi I placed a deposit on a block of land in Vanuatu eighteen months ago, the developer says he is now ready to develop the block and has put forward a vendor finance deal at 9% for four years. There is no end date stated and the terms appear to only offer protection to the vendor and very few guarantees as to when the infrastructure will be in place, when vendors can sell blocks as well as what their sales commission will be.

if anyone has any experience in property development, particularly overseas I would greatly appreciate your ideas and input.

Thanks
Sonya