When you produce a Kickstarter you have to be mindful of the possibility of the project going 'bonkers'. With more models and more backers you open up the opportunity to overrun. We didn't want to do that.
At the time of writing (36 hours before the end) it is our aim to try and fulfil the project by April, May at the latest. Those people that can be fulfilled will be done so immediately depending on their pledge level.