Lucky you! I spent a month in Thailand about a year ago.Amazing place.
Last-minute advice? Have fun and get a tailored suit!
http://www.unpezvivo.com/foto/camboya04/camboya04.html (old flashy gallery! )
I just came back from two wonderful weeks in Thailand (Koh Lanta).
Advice? Be careful asking for your food to be extra spicy!!!!!
when you go to bali, just contact me, i may can become your personal guidance.
^ Angkor is heart breaking, even with all the tourists you will find there. If you have plans for less than 3 days there, change them. I highly recommend to hire a bike to visit the temple area (which is huge, btw). Also, if you have time, i would give a chance to navigate on Mekong river, up north to Phong Phen, worth it so far. Also, the route on small boat from Siem Reap to Battambang is highly recommended.
Jealous… Enjoy the trip!