I'm going to be hauling all my household goods from Alaska to Ohio this summer. I have a 24' bumper pull enclosed cargo trailer, and the truck in my sig with the factory towing package. Combined weight empty is 11,000 lbs, I'm guessing the truck weighs about 7K, and the trailer 4k. The trailer is a tandem axle w/ 5200lb axles, the GVWR for the trailer is 10,000lbs. I'm guestamating that I have about 4K lbs of stuff to haul, bringing the total of the trailer to aprox 8K lbs. I have a couple questions. 1. will the stock receiver do? 2. Will I need weight distribution bars? and 3. Airbags? I am distributing the weight evenly, and putting the heavy stuff over the axles so I don't know if the last question can even be answered. Thanks in advance for the help.