Since you posted this here, I feel it is fair to respond.
I am so done with kickstarters for new printers and printer add ons (the last ones I did are so far past production and delivery dates it is silly) that seem to have unrealistic delivery dates. These folks show shipping in December 2016, but also state they do not have production facilities set up yet.
Unless they have them already made and sitting in a warehouse, I am leary. The more backers they get, the more leary I get.
An unusually short delivery time often is an indicator that the kickstarter has unrealistic expectations as to what it takes to deliver.
I am also concerned they list no production partners, current team member resumes, etc.
Not saying not to back it, but be prepared for a later date than the projected delivery.