I have a 1996 LX 450 I would like to use for car hauling. From what I've read, the towing capacity is only 5000lbs. It seems quite low, being that I'm finding average trailers can weigh as much as 2,000lbs?! Is 5000 the actual towing capacity, or is it a safe estimate from the factory? What kind of trailer should I look for/ I need something very light weight, but heavy duty enough to do cross country towing if need be. Thanks!!