Have to agree with others, a friend got a job, flew up to organise accommodation came back shipped of his stuff. Got hit with more taxes than the goods were worth, as the goods weren't on the way when he flew in the first time. And the goods were purely house content.
Even if you have an expired Myanmar Passport have you tried to get it renewed in Canberra, and you will get better help from the Thai consulate in Sydney, as most of the Thai staff there are Aussie residents and so much more aware of day-to-day stuff, whereas Canberra seems to be Thais on a posting from Bkk.
As others say IT Square, you can catch the monorail, make sure someone has registered you on a TM30. so that immigration can see you on the system. 1900bht in cash.