Thank you for all the replies. My concerns were confirmed. I will be a novice at pulling an RV. I have pulled an Escapade cargo trailer behind my Goldwing for tens of thousands of miles but not exactly RVing.
We plan to be staying at full facility campgrounds so I don't think I need to be carrying near 790 lbs of water. The F-150 with 420 lbs of torque is rated to pull 11,300 lbs. I wanted to keep the weight under 8K and be able to control it. This has been the first I heard that manufacturers fudge the weight numbers, very good tip. Thanks for that.
What would you all think a about this Cruiser XT 276
http://www.cruiserrv.com/products/fun-finder-xtra/floorplans/item/xt-276
It is 30' and an advertised dry weight of 5,110 if that is to believed.