I am quickly learning these cables for the SF600 are the worst, they are so damn stiff.
I've worked in some PITA ITX cases in the past, but I feel like this one if you don't have the right hardware can be just as tough even though it is a bit bigger in size. For one, if you have a mobo that can use 1 or even 2x M.2, you will be golden. My SATA cables will only reach to use 2 HDD's in this case, and those are very tight. I'll probably have to put this build I think on the back burner till I figure out what I am doing with my system hardware.
I did try the 1070 Strix OC, it does fit without having to bend the bracket which is nice.