There are other ways to run the USB3.0 cable. Position 2 is the ideal position but there really is not anything by default to attach the rad or fans too. You will need to make a custom mount, be it simple with screws, or complex with a bracket setup.
I found the fan holes on the front panel to not align with the internals. I think the 140mm fan holes were 1/2 inch too low so the rad would not line up easily.
* my post above, silly phone word predictor *