We have a 2015 Sienna Van with the V6 3.5 liter motor. We are looking at a Spree Escape E18RBT hybrid. Unloaded Vehicle weight is 2,690 lbs. GVWR is 3,500 lbs. Can this work? The more I read, the more confused I get. The Sienna is suppose to tow 3,500 lbs but would I be pushing it? No mountain driving planned.