Wow, this sounds intense. I think the longest I was ever out to sea at a shot was about the same amount of time (it sucked, BTW). Of course, when you're out to sea on a Navy vessel basically all you do is work and sleep, with a little spades thrown in. I hope you don't get bored easily.
Bobbymitch is right about the night sky. You'll never see anything like it on land.
As for your destinations, I was an east coast sailor, so I've never been anywhere near the Orient.
Good luck! I look forward to hearing your lengthy report.