If your real reason is just to minimize cost you might consider and older Jeep with a Ready Brake system. They are inexpensive to buy, reliable, and easy to modify for towing. The Ready Brake is also inexpensive and easy to install.
Just a thought.
Dick
2002 43' DP Beaver Marquis Emerald Cat C-12 505 HP, 1600 Tq
2003 Jeep Grand Cherokee Overland ---toad