Hey Mark - I tow a toy hauler in the range that you're looking at. I wouldn't dream of towing it with less truck. This trailer is huge. The last thing I would want is to have to sweat the safety of an overloaded truck while pulling it.
Get the dually. I wondered how I would feel driving a dually as my daily driver. It's fine. Parking isn't an issue, especially in the newer models with the backup cameras. I stick it between the lines EVERY SINGLE TIME. And I get out and check after I park and if I missed my space I'll get back in and fix it. There's a Facebook group in my town where they post pictures of people who park like morons. It's my pledge to never see my picture on there.
It's easier to drive and park than I would have thought. And more importantly, towing is very comfortable. Don't chance it though. You dealer might not even let you off the lot if your truck is overweight. Even my sales guy made a point of asking me what I drove before he closed the deal.
Good luck. Come say Hello in the Toy Hauler forum.
