Desmond is preparing the checklist one by one, progress looks good, he will go thru with you one by one. It should take 1-1.5 days. The rest of time, it is up to you for what you need him to do, he is yours for those 3 days :)
He will arrive BKK on 9th, and 10-12th will be on-site with you. He stays in the same hotel (Marriott) the one near Minor office. Please arrange with him, his HK Mobile is +852-92284288. He might get a thai number at airport.