I am looking at purchasing a '04 or '05 Sienna to tow our (kids and our )pop up camper. It is a large pop up with a Gross Weight (fully loaded) of 3300# and an empty weight of 2200#. I know the XLE for these years is standard with a trailer prep package rated for up to 3500#. Does anyone have experience in towing with this model? Are we pushing the weight limits? We don't plan on traveling with a loaded water tank, which will help. I also don't see us traveling in the mountains or anything too crazy. I also read somewhere the vehicle is kind of low to the groud for towing. Any help/advice is appreciated!