Just purchased a 2006 4Runner Limited V8 4x4 with 40,000 miles. I'll be towing an enclosed 2200 lb trailer with up to 1200 lbs of motorcyles in it. It is equipped with factory receiver hitch and 7 pin connector and I believe it has the towing prep package (i.e. HD cooling, Auxiliary Trans Cooler and HD Alternator). Any issues or problems I should anticipate with this vehicle?