My husband is Australian and we plan on visiting his family there within the next year. Since well already be travelling to that side of the world, Im thinking of also travelling to New Zealand, then Thailand, and hopefully Tokyo. Is it reasonable to visit each on one trip? We would be going to Australia during December, is that a good month to visit Thailand and Tokyo? Should I reserve Thailand and Tokyo for another time? (Ive compared flights of doing the trip all together or doing each place separately and it works out to be about the same price) Thanks.