Check out my profile for a pick of my 21 FBRS behind my red F-150 supercab. You will have no problem towing it. But you might even want to consider the MicroLite 25 DS. We started with the 21 and switched a year later to the 25. Both have the front window by the way. We loved the 21 but the 25 is better in most every way. The shower is much better. The little shower pan in the 21 let water run into the floor. The 25 has a tub. The 21 is 3,700 lbs and the 25 is 4,100 lbs. I have the weakest 4.6 L v8 Ford has in their trucks and while I am at the max for the CGVWR, it tows it well enough.
Here is my video review of the 21 FBRS:
Here is my video review of the 25 DS: