Taryn
Not sure what you're really looking for. A truck that you can drive around home normally, a truck that can pull the 2900, or one that will do both. Are you set on Gas and the amount it may use?
Here is my experience. I had a Lincoln LS that was really fast. 160 MPH on the speedo. It got 21 mpg on the highway at 70mph.
My 2006 F250 Diesel gets 18-21 mpg on the hwy at 70mph, about 15mpg in town and about 10.5 mpg pulling a Bighorn 3400 which has a 14,800 GVWR and weighs about 12,400 on the axles (have 7k axles not 6k). Your 2900 has a GVWR of 12K. I now have about 72,000 miles on my F250 and have had some minor problems which were handled with the 100,000 mile engine warranty.
If I can get the traction I could rotate the world.
Well almost.
But if I were going to get a Tow Vehicle that could meet the needs of daily work and pull my trailer, I would go with a good diesel truck.
Now if you need a vehicle to go to work and you drive 50-60 miles to work, I would invest in a $5k Honda or such that got 40 mpg and drive it until the wheels fell off and then get another. I actually did that for about 20yrs to travel from Rowlett TX to Fort Worth TX every day.
Just my 2¢ worth....