You'll need at least an F650 to tow 25-30K pounds! That's WAY over what an F250 can handle.

An F350 has a GCWR of 23,500 pounds. The truck weighs about 7000, so it can tow a bit over 16k, far short of what you want to do.

The F550 can be ordered with a 33K GCWR, and since that truck weighs about 9k, you can only tow 24k with it. So an F550 isn't big enough for what you need.

Go look at the F650-F750.