I had assumed that booking tickets for December now in May wouldn't be a big deal. Turns out that I am wrong. Northwest has a flight into Kilimanjaro International Airport (JRO) and so I had imagined a long but rather straightforward set of flights from Seattle to Amsterdam and then Amsterdam to Kilimanjaro. This direct flight into JRO is not available around the 22nd (seems as if it is cancelled for the holidays) and so now we will have to fly via Nairobi (NBO). This gets a bit more complicated due to conecting flights and layover times which make leaving on Dec 21 as initially planned difficult and we may have to leave on the 20th instead. I am also considering to fly out to San Francisco where there are more airlines (Virgin, Emirates) leaving for Nairobi, and join Susheel there (instead of meeting up in Amsterdam as initially planned). Tusker has booked flights for us via Nairobi via Northwest Airlines for us right now and Susheel has a travel agent who also is trying to find us a good deal.
In the next couple of days this should be decided and locked down.