JavierVerdugo, yeah, waiting a bit & grabbing 780ti is worth - You can always grab different card later =)
* if You're looking to house multiple cards in Your case, get the cheapest with reference cooler - that metallic like with shroud that sits on 690/Titans etc (& it will be easier to find water block coolers if You ever decide to water-cool it)
* if You're looking for ribbon cables & custom open type cases get good aftermarket cooling - like windforse from Gigabyte, strix from asus etc..
* personally I see no need for anything like 'kingpin' editions - isn't worth on the long run.. (just my opinion, other might disagree..)
distributor depends from country to country, I live in Norway for now & here's Komplett; uk has it's own e-railers..so it's hard to recommend..just do some basic googling & try to compare prices..- remember that parts come to some of these companies from probably the same warehouse, so it's only a meter how much extra each retailer/e-tailer charges & how it treats it's customer. I'd always advise to stick with those who are willing to communicate fast & clear, otherwise you get into troubles if You try to get stuff back for some reason or so..-always nice to support good vibes! =)