92mm are EOL so who ever has them has them, then they're gone. AFAIK the 120mm & 140mm are still in production.
If my Xonar wasn't so long or if my RAM slot's were a tad higher the setup would be much different and the fan would be as you suggested but alas my hand's are tied. Ideally i would have liked to have the Xonar in the top pciex1 slot with the HR03 flipped and the fan set to push but it hit's the memory if i try that so it is where it's at