You're killing me here!
I looked at airfare & you're right, it's the lion's share of the cost. It ran a little over $2000 per ticket in coach, which I expected would be the case.
Seriously gorgeous pictures. I found an eco lodge on Khosre that was very reasonable, so airfare is definitely where the pain of the trip will be felt unless you're some kind of mastermind like you are, apparently.
Those worms are just fascinating. You posted another pic of those on purpose, didn't you? Haha!