You'll be using most cables anyway and the R4 has plenty of cable management. Modular 520W will be just as tidy as non modular 520W.
Both of the motherboards you picked are quite overkill for that processor. They don't really offer anything substantial over cheaper SLI boards when you don't overclock. In addition, a 520W PSU doesn't support SLI, so you don't even need a Z87 motherboard. I'd recommend Asrock H87 Performance, it's the cheapest board with Realtek ALC1150 sound. (On the other hand, if your intention with picking those motherboards was to support SLI, you'll need a 750W PSU).
HR-02 Macho is overkill if you don't overclock, can you find the True Spirit 120 instead? Or a similar 120mm cooler with lowish minimum RPM and PWM control.
By spending less on the motherboard and cooler, you may be able to increase your GPU budget. A GTX 770 is not always enough for high settings gaming on 1440 - if you can stretch it for an MSI/Asus/Gigabyte GTX 780, that'd be great.
Finally, with your budget I'd probably want to get a Gold rated unit instead of a Bronze unit built on an aging design (though still functional).