Only one can decide what's best, you'd be sacrificing time away from family, dogs and things you love back home for a more than good offer in a foreign country that you know nothing about. How old are you Harry?
One of my partners went to live to Thailand 4-5 months ago and he is already looking for a way out. He complains place doesn't fit his lifestyle much and that the country is making his staying harder than it should be. He is a coder. And this is a guy that has been living abroad for the last 5 years, in Chile, Paraguay, Peru, Colombia and Mexico.
How many time are they offering you over there? That and the assurance you'll get a job back at home are the most important things. You will be able to gamble online play at the major sites and gather lot's of money and life experience. Thai girls are hot as fuck, that adds up. You sound like a strong alcoholic in recovery, being one myself (not on recovery) I think you can survive the partying scene over there. If you take this and succeed your bosses will love you even more (they seem to throwing that strong offer), you will learn a lot of shit about you, cultures and life in general and probably come back in 1-3 years with a shitload of money, maybe even enough to start thinking retiring early. If you feel homesick, well you can always but the company of 3 ladies 24/7 lol.
Think about this, you are a succesful poker player, you'll have more bankroll, almost 3-5 times your current one, as your raise will cover it and your limited expenses in Thailand will allow. You could really turn into a pokerstars mtt monster.
Maybe you can make it to the Asian live poker tournaments as well.