If you want to establish a Thai company to purchase the land you will need 2 share holders (since March this year, before 3 were required), and the required minimum share capital is 1m Thai Baht (price of the lot has nothing to do with opening a Thai limited company). You are obviously one of the share holders, the other one must be Thai, for example your wife or anyone else, and must prove his or her 510k (equal to 51%) in a bank account in his/her name only prior to establishing the company. You can establish sole authority to run the company. The process takes 1-2 weeks. I'm using Tuk accounting for all my accounting and legal needs, google and you find their details, they have very reasonable fees, are reliable, and they have an office in Pattaya. They can also help you checking the Chanote, obviously.