I may have the opportunity to travel for 40 days this winter (I live in the US). Im trying to travel on a budget ($3000-4000 including flights), stay in hostels, use budget airlines, eat groceries, etc. Im a solo male traveller. I would like warm weather – not too hot or cold.

My top choices are:
-Hong Kong, Taiwan, and Okinawa
-Thailand and Cambodia
-Australia
-New Zealand
-Somewhere in South America Ive been to: Spain, UK, Costa Rica, Bahamas, Canada I love history, culture, food, amazing sights/landmarks, nature and hiking. I want to see exotic places and background culture shock! I dont want to have to worry about visas and vaccinations. Ideas are greatly appreciated.