Re: WTB Thai IDN's with Search Volume
My only "advice" is to start much higher than 50K monthly searches. That's only a 2K visitors a day say, and even top 3 you wouldn't be getting more than a few hundred visits a day. With the amount Thai advertisers pay out (via Adsense or other networks), you will hardly make enough for a cup of coffee to get you started in the morning.
If you are SEO skilled as you say you are, aim big and conquer the competitive terms.