Each strand spans 15 feet but this is l;eft entirely up to you. One light had 40" of cord on each end. You can hang them however close or far apart from one-another as you'd like. For example, you can hang 1 RBL and connect it to a string of (really tiny) icicle lights, and then connect another RBL on the opposite end. The possibilities are endless!
Unfortunately not this year. We are limited to just the multi-color option (red, white, blue, green, yellow) and the all white option. Once we are in big box retail (thanks to our big Kickstart!) you will have the option to purchase each light individually. But for Christmas '15 you've got two boxes to choose from.
We are not shipping internationally for Kickstarter pre-orders due to the shear expense of shipping. Really Big Lights require really big packaging (each box is 36" long and 15" high) so DHL'ing 1 box to the U.K. for example costs over $100. For special orders please visit our website and Stephen will swiftly respond.
Don't see the answer to your question? Ask the project creator directly.