8.5’x24’ enclosed towing w/a 2023 F-150 hybrid.
WD hitch a must (don’t be a cowboy and think you don’t need it).
MPG is pretty poor but it is what it is.
In regards to the trailer itself, mine is a 1997 and it was top of the line for its day and has held up OK. Got it for dirt cheap off Craigslist. Mighty mover w/torsion beam axles (highly recommend), trailer brakes on each wheel, custom cabinets, winch, fridge, microwave, etc.
Lighting, winch and ability to mount cabinets + a counter are a must. The counter goes a long way towards making the trailer feel like a “home base” while at the track or needing a flat surface to work on something, analyze data, etc.
I would budget $600 or so to buy locks for the trailer. Tongue lock. Hitch lock. Door lock. Rear swing door lock. Wheel locks. Way too many stories of trailers getting stolen.