You have (an estimated) 2-5000 orders queued up. Some people ordered in May and now have to start to ship them in December. Other than the order that you took the orders I cannot think of a better or fairer way to dispatch kits. The only real exception is if they run out of a certain size of soft parts, that shouldn't hold up other orders whilst they restock but I would bet real money the hold up here will be assembly of the bucket and belt components.
The original advert said "winter". Winter pretty much runs to about Feb/March ish so they still have months to ship. Also preorders are often late, if you expected anything else you were doomed to disappointment.
Constantly harassing them via FB/email/twitter about "it's late" isn't either factual or helpful. It will ship when it ships, let them do their job. They said they are about to ship, at least wait and see if they have been honest.