Hey !
I've done 15+ kickstarters in the past two years, 14 of which being successful. Looks like your campaign is already off to a great start but after reading through I can defiently say a video will probably get you over the funding hump. Would love to chat more about the explainer video, I have real-footage and animation based ideas.
Thanks
--Z
Portfolio : please message me for a link (Freelancer censors links)