Now that OP has made his decision, I'll drift the thread with this towing tidbit...

I looked into towing with a hybrid. There is an issue with overheating of the electric motors on long grades. The 'recommended tow weights' are much lower for the hybrid version of the same model vehicle. I'd guess that part of the issue is that the same motors are used for 'regenerative braking' on the downgrades, so they don't get a chance to cool off.