Yes, I think we will do Chiang Mai for sure before too long...no worries about tsunamis there.
I dove Hurghada in Egypt, never to Maldives, but Bangkokair flys from Bangkok to Maldives now, but its damn expensive there.
I like Thailand, where $16 a night is good, and that amount in Nam is palatial!
Chaing Mai is Bangkok at half price, the night market and sunday market are amazing, and if you like temples, its the place. Good drive north to Chiang Rai and the Golden Triangle.
Next trip there will be to Yangoon and through Burma, yeah its a dictatorship, but what the hell?