you could put the res above the power supply in the back, and put the rad down in the front with the pump in front of it. With the way the front bezel bows out a little you might be able to fit a 120 in between the bezel and the case. It might give you the extra room for the pump. That or use Mashies trick and mount the rad in the bottom of the case and duct the 120 from the front, and put the pump above the rad.
Here is a link to a case mod of the HX08
Mashie's dope smack