As you have read, there are many posters who believe that you can't tow with a V6 or anything less than a dually. That TT is well within your tow vehicles specs and capabilities, unless you plan on loading 1k of passengers into it. There is no reason why you couldn't, or shouldn't pull it safely.
Of course there are vehicles out there that will do a better job but you'll be fine with what you have. A WD hitch will be a must for the tongue weight. The short wheelbase Pathfinder will benefit from one with built in sway control. Don't be afraid to let the V6 rev. It's power is found higher in the RPM band.
I towed the same TT across the country with a V6 4Runner.
