I have had 0 issues with any parts I've used from any manufacturer or colored coolant. If you use koolance they actually recommend you use their coolants because they supposedly contain lubricants and other additives that maintain the chemistry of the water and prevent biologic growth inside your loop. Really the key to building your loop is doing what is in your budget and checking reviews on different parts. www.frozencpu.com is one of the best sites out there for finding parts and there are more. If you wanted to use koolance parts you can buy from them directly. $1000 for a loop not including fans, cables, or controllers is pretty crazy for most of us. I don't care how you sell it 13 fans worth of radiators is completely unnecessary. I cooled an OC'ed 4770k and 2 gtx 680s on 1 thick 240mm rad and I really didn't hear the fans unless I was running prime95 or some other kind of stress test.
You can ask for recommendations on manufacturers but really it comes down to doing research. What you will actually need will depend on your tdp for each component which is how many watts you need to dissipate. For a 5960x you are looking at about 115w and 2 gtx980's should be around 340w without overclocking either. Add about 20% for overclocking and you need to be able to get rid of about 550watts or so worth of cooling. So knowing that you just need to find radiators that will make that happen, a 360mm radiator should do just fine with the right fans. I don't recommend sp120's because they're more or less middle of the road fans. You can find quieter fans with more static pressure and airflow for about the same price or cheaper. Also steer clear of bay reservoirs because they may seem easy to install but they are generally horrible at getting air out of the loop and keeping it out. Most D5 pumps are all pretty much the same, if you want a really powerful pump I'd look at koolance's pmp-500, it is fairly loud without a baffle box of some type though.