Newbie questions about full-time tow vehicle decision

[ToddB]

Hi folks,

We have made the decision to hit the road full-time in June (four of us along for the ride most of the time) and just purchased a 2017 Passport 2670BH (5,000 lbs empty, 7,000 lbs full). This is our first RV and this will be my first purchase of any type of vehicle capable of towing something this size. But I am waiting to sell my house before buying a tow vehicle for this big trip.

Here's my question: Would you ever consider towing 7,000 lbs on a full-time basis with anything less than a 3/4 ton truck?

I've done plenty of research on towing capacities, axle ratios, GCVWR, etc. There are obviously some SUVs with ratings of 8,900-9,200 lbs when properly equipped (Expedition or Navigator would be my first choices in that category). But I'm talking about towing 25-30K miles in a year potentially.

Would I be an idiot to attempt this adventure with an SUV or even a diesel van (E-250 or E-350)?

Appreciate any input you might have.