Would this fit for little bit of overclock?

Solution
I'm pretty sure it would, though personally I would probably skip the water cooler and move up to a GTX 1070 instead, as the graphics card will tend to have more of an impact on performance in most games than an overclock. I'd also probably go with a less expensive mechanical keyboard, and put the money saved toward a 144Hz screen, so that the smoothness from those higher frame rates can actually be seen.
I'm pretty sure it would, though personally I would probably skip the water cooler and move up to a GTX 1070 instead, as the graphics card will tend to have more of an impact on performance in most games than an overclock. I'd also probably go with a less expensive mechanical keyboard, and put the money saved toward a 144Hz screen, so that the smoothness from those higher frame rates can actually be seen.
 
Solution