<p>I have been living and working between Cambodia and Thailand since 1994, currently based in Bangkok. Your trip is technically in our winter, but it can still be quite warm. (I was in Hong Kong yesterday on the hottest July day in 50 years.) <br>
You will definitely want to get it all into one carry-on bag of not too much more than 7 kgs or you will be running into issues with having to check it into the cargo hold. Just the two bodies and those two lenses are almost at the limit.<br>
I am full time photographer and sometimes shuttle between cities with a lot of stuff, but I would never go on a trip with that amount of gear, but I guess you know what you want to bring along. That much stuff will feel like a massive anchor after a couple of days.</p>