NZXT 530 Source Fan size and placement.

NZXT thank you very much. I bought a sh*tty cheap fan for front intake in the middle (and believe me it is a piece of garbage fan, LOUD) and my temps have come down fine with 2 changes. The 120 front intake, with the standard 2 120's already installed in the back top and back. Evo 212 cooler in position (those things SUCK to put on btw if anyone is planning to put one on.) I mean SUUUUUUUUUck. Next time I make a big change I'm taking the whole box apart and putting it back together then lowering it into the case.
Those bastards at krait didn't give me a cool sticker to put on my metal thing that covers where all the cords plug in the back for standard. I was expecting at least a black sticker, or a cobra or something. Come on you cheapos. It's just a jankkity piece of metal (which I forgot to put on the INSIDE and is now precariously on the outside). Aiaiaiai details.
Oh well, my friend is offering me his old water cooling kit for the cpu with a 280 radiator and all the tubes and blocks as well. Everything I will need, he said.
It'll be like 40 bucks. Is that a good deal? Or am I better off buying brand new water cooling; it's not that expensive these days, but this guy would not sell me garbage, he's just way more on the cutting edge than I am, as in 2 basically Titan gpus 4k display and everything you need to make that run on all optimal settings.
And Hey, NZXT, while I have your attention, those wonderful clips you have to clip in optical drives at the top, I might have broken one just trying to open it up as normal. Not for sure, but I can't seem to get it back in the rear hole. It's the clips that say NZXT right on them. Front part is ok, just the back that is acting funny. If I could just show you a pic, this would be so much easier, maybe I'll get a pic dump and link it.
Am I asking for a whole lot of hassle and grief if I water cool my CPU, or are you guys thinking it's worth it? Gaming is obviously a big use for my rig. It can fit that size of radiator for sure. Then I can overclock with less worry.
Also, he's wanting to move up cases and wants to sell me his old one which is very tempting, it has like 4 sli slots I believe if not mistaken, and a custom window (the custom I could give a crap), but not all that happy with the NZXT in some ways. With all the military hardware they tout so often, why can't they make the dang thing easier to get in and out of. Taking both doors on and off is a pain, even with thumb tight screws. I'm tempted by his case too, because of the extra SLI slots, and incoming SSDs prices leveling off etc.
So now that I've got my fan situation squared away after 3 fans; my computer guru says it gets to be diminishing returns after 3.
1, 120 middle front blowing in. 1 120 top back. 1 120 top Up and back blowing out. so 3 case fans, plus the 2 on the 970 strix Nvidia gpu, and the one on the power supply, and one blowing toward the back on right side of my evo 212. I should be fine temp wise going forward monitoring temps with Cam (can anybody think of a better temperature monitoring software, I'm not all that fond of Cam 2.0 or the first one) something that's going to give me a good warning and be able to run while I'm running at load if my temps get too high.
Thanks again all.
Apologies for rant/thanks to all corrections & wise advice. You guys are GREAT!