I just finished installing the rad and fans. Rad goes underneath the top grill. Fans go above. It's easy when you bolt just the rad in, and then you remove for bolts and use the long screws to get the first fan. Repeat for second. Then attach heatsink to the installed motherboard and cpu. However, one fan cable won't reach the H100 cpu cooler. I called Corsair and they're including an extension for this issue and even offered to mail me one for free.
I'm very impressed with Corsair. You can also go to Fry's and pick up a 3 pin fan power extension cable, which is 12" long, more than enough length to work. I went to my local Fry's because it wasn't that much out of my way, but if you're using the H100 with the 600t be sure to order or have one extension cable, maybe two depending on how you run cables. Cables was a little tricky for me as noob. But thanks to everyone I'm almost done. 8D