Why not just buy the card and block and install yourself to save some money? There are plenty of YouTube videos on how to remove a stock 680 cooler and installing a waterblock. Most blocks also include step by step directions as well. Just a thought if you are budget conscious. Just check if the card is reference or not using the EK Cooling Configurator http://www.coolingconfigurator.com/
As for the other components, why not get a kit with a 360 rad in it or are you concerned about mounting locations? Other than that, not bad choices for a budget beginner build.
There are also some other 120mm rads on FrozenCPU that are cheaper and would are just as good as that Coolgate. Here are a couple of excellent alternatives that might save you a couple bucks ($46 and under and don't forget fittings or barbs):
I don't trust myself to do it, but I think I'll go that route and the gpu and block separate. yea, with the case I've I'll would have to mount outside and idk how to even mount a radiator outside the case
thx for all the help, I got what I need and how to put it together. my total budget for my computer total is $1458 and when I add the prices up of everything i'm doing I come out at $1431, so some next month I'll be ready to put them all in my computer.