What you picked it just for the pcie. You would need to know what cables you need for your GPU. From the looks of it, you would want 2x the 6+2 which would be about 32$ (16$ each) to customize your own. You would then also need to get the 24pin which rounded is 25$ to customize. These would also be full length cables and not extensions.
If you just want the pretty look to be seen through the side of your case and your cables are otherwise hidden below a shroud and/or behind the case, I would suggest extensions. The 24 pin is roughly 16$ and the pcie cables are about 20$ (10$ each).
http://www.icemodz.eu/#!/Icemodz-Value-Extensions-Pack/p/50291487/category=12001336 will come with the 2 pcie cables you need and the 24pin but will also include the 8pin motherboard cable. It's 43$ and would be an extension for every cable that would be exposed. Again, if you need to see an example of the cable extensions, check out the link in my signature below and thumb through my pictures. A case design similar to that hides that they are normal cables with extensions on them, but saved me money in the long run.