My English skills are really not the best so I have to make it short:
My build is not 100% finished yet, but it works. I still have to buy a graphics card... a gtx 780 ti hopefully.
Problems I had:
-The 8-pin CPU cable wasn't long enough to hide it behind the mobo -> I ordered a white sleeved adapter.
-The NZXT Sentry Mesh fan controller I bought makes.. kinda.. "interesting" noises. It works but.. nah.
Oh and if you wonder, I made a custom side window. as braces i used 16 of the fan grommets which came with my case. Fits perfect!
Also I removed the upper HDD cage for better airflow.
My PC is really silent and the temps are ok (28°C idle, 55°C load @4.0GHz). The fans do not run at full speed! So better temps are possible.
Update: I can't flip the PSU because the mesh on the fan makes it too high. So it doesn't fit anymore. The only thing you could do is to put the piece of metal (psu.. holder? ^) out of the case. Look at the pics!
Update: I ordered white sleeved cable extensions for the cpu and the mobo cable and 2 corsair af120 performance edition fans (and some y-cables) for a better look! I'll mount the 2 new fans in the front and the ones which are there now in the top. I hope i get them at saturday
Update: Some people asked me about my solid window so I uploaded some pics. I used a (little) buzzsaw and a normal drill.
Update: My parts are finally here (after 2 weeks, special thanks to alternate ._.) and I put the 2 af120's in the front and one standard coirsair fan in the top and the other behind the lower hdd cage. Also i bought a ssd (samsung 830 128gb).