hey ulijin i just need to overclock my cpu with the most safe voltage and overclock a little bit my gpu as well .. and the only only thing i do is play BF3 and now play BF4 and the next thing i do is render videos in song vegas. And THATS IT ! . so tell me if i can achieve this ting little task with a silent rig , yes personally i do prefer silent rig but to do my task that is play bf3 or bf4 with maximum fps and to get that even silent rigs will work then i am fine with that.
For what you're doing you'll be fine running silent.
There's a good roundup of 360 rads here:
http://www.techpowerup.com/forums/showthread.php?t=173028
In my humble opinion: for your 360 in the roof if you want it to slot in and be pull only then pick between these 2:
XSPC RX 360
Alphacool NexXxos UT60 Full Copper
If you're willing to do some modification, I went for the "Alphacool Monsta 360" and would suggest it again.
If you want to go push pull you should probably try this radiator:
Alphacool NexXxos XT45 Full Copper 360.
For the floor you can pick any 240mm rad without any issues unless you need the additional drive cages. Might I suggest an Alphacool Monsta 240mm...
Cheers,
Ulijin.