I bought a mounting bracket from corsair for a generic asetek cooler I got from a friend's cyberpowerpc, it worked fine, but I don't know if that will work for you. Heres a link. It looks similar to his liquid cooler. If your cooler looks like a "Corsair H50" in that it has the circular shape with the tabs on the sides, then it will probably work for you. Any 1155 cooler will fit 1150 as well, so if you see a cooler that interests you and its 1155, its okay. 2011 coolers won't work unless it also has a 1155/50 mounting system included.
http://www.corsair.com/cwch50-brktkit.html
To summarize, everything in your case from HP should be ATX. Thats a standardized form factor. So pick out some parts using pcpartpicker and then use the HP 002 Case and assemble it inside that just as if you had bought a new computer case. Its no different from any other build, except you are using a really awesome case!
Heres what I would recommend:
1) 4770 or 4770K (which is socket 1150) K series is unlocked for overclocking but you probably won't need to overclock so the extra VM features on the non k might be worthwhile, it depends... This is the latest highest performance intel cpu for the consumer market, you won't be disappointed.
2) A z87 motherboard (the performance socket 1150 motherboard) Asus or Gigabyte or MSI, or whatever your personal preference is here.
3) A Nvidia Geforce 780/770/680 or AMD Radeon 7950, 7970, R9 280, R9 290, or R9 290x. Buy whatever is cheapest of these cards, you will probably be happy with it! AMD and Geforce both have good driver support now and you can't go wrong with either. Bitcoin has made AMD more expensive right now so you may want to go with Nvidia. Geforce 770 and 680 are the same thing, but the 770 is updated with a bit more performance. Radeon 7970 and R9 280x are the same thing, similar to the 680 and 770. 680 and 7970 are similar in performance so that gives you some idea of what modern GPU's are like in the market positioning.
http://www.techpowerup.com/reviews/AMD/R9_290/20.html Heres a review showing a bunch of these graphic cards and how they rank up to each other. Hope you aren't confused by all the numbers in these brands, but just read that review, look at some of the charts, draw the conclusions you need.
4) 16 GB of DDR 3 Ram, you want a 2x8 GB kit with 1.5v or less DRAM voltage and 1600 speed or greater.
5) new powersupply: get a Seasonic Gold, 600 watts should be about perfect for a single graphics card, a few harddrives, etc. 800 to 1000 watts would be good if you run two graphics cards or a ton of harddrives and fans and other junk. 600 watts is probably the way to go. I'd buy a fully modular PSU, this will make building it easier, since the wiring will be more manageable.
6) A new CPU cooler. I'd get a H80i closed loop water cooler from corsair or a Phanteks PHTC 12DX air cooler. Depends on if you want to run water or air. Its not a whole lot different really at those price ranges so Its your call.
7) An SSD for booting, 240 GB is a good size range
8) Try 1 or 2 TB Western Digital Caviar Black harddrives.
If you like these ideas, send me a pm and I'll put together a pc part picker for you or something. I don't think anyone would disagree with these ideas, its pretty much the standard for a high end computer at the moment.
The whole computer,this is what my plans were,
http://pcpartpicker.com/user/newfielander/saved/3yj8, other than the fact I may want a different less expensive card that will fit my needs and also was planning on keeping my cooling system that's already installed if there is a way I can check and see if I can top up my cooling liquid if need be.
Buy an H80I instead of the H100I, its easier to install because you only need a 120mm fan hole to mount it to, instead of a radiator mount. Otherwise it looks fine! Get a new power supply! Heres an example:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151118
