Can anyone please help with a travelling Itinery for South east Asia? ?

Sugar_456 asked: My boyfriend and I have booked return tickets to Bangkok, leaving Nov 08 and returning May 09. We are trying to work out the best itinery, taking in to consideration weather, money, festivals / parties etc.

We want to visit Thailand, Vietnam, Laos, Cambodia, Indonisia, Malaysia, Singapore and China, with the possibility of [...]