Originally Posted by format 
I've got the same case/HSF and PSU as you
I've disabled the top fan though, and run my TRUE at a different angle so the fan at the back takes air off the HSF fan too. My GFX exhausts air out the back of the case so I don't think I need anything else.
I have also disabled the roof fan, i actually cover the whole to stop dust getting in, i have also added a piece of tissue in the front vents to redude the dust coing through.
the board i have means i can only have it this way as the bracket only fits this way
, but its ok because the air being directed from the gfx card (which gets ridiculously hot!) i don't know why but i have the psu upside down.