Towed with a Cayenne S for a couple years, and it was great. The Porsche trailer harness ties into the trucks systems and you get notifications about trailer light status and such through the truck's display (only source I could find for the harness and hitch was the stealership, so bring your own KY). The one downside I found was the truck does not handle LED trailer lights well...not enough resistance for the truck to recognize that the lights are not burnt out?
The self-leveling suspension was awesome, and my little rig behind the truck was no issue at all (FSP Civic on a light, single-axle open trailer).
Only new factor for you is the turbo - more power will not be anything but a plus. Not sure if there is anything else on which you need to keep an eye.