I get not wanting a full size pickup for a daily driver, but modern 1500 series pickups are very easy and pleasant to drive. There are some hybrid options from Ram (sort of a hybrid), Ford and Toyota, and all are capable of easily towing a 7000 GVWR trailer. Ram and Chevy have little diesels that offer good towing grunt and shockingly great highway mpg, and you don't pay a huge premium for the diesel option like in the bigger trucks. I'm not a Chevy guy, but I'd look at their 1500 diesel option-also available in the Tahoe and Suburban if you must have an SUV. IMO, nothing smaller will handle the trailer you want.