I figured it to be an 8-footer because you could see under the sides of it all the way out the back, no rear overhang that covers the truck taillights.
If you had any 3/4 ton pickup you could carry that without issue.
You might want to just get an “overkill” one ton dually anyway and here’s why.
It would be absolutely effortless to haul that, it would drive like there’s nuthin’ to see here folks.
And also... the 8 gallon holding tanks!! What?? You’ll get tired of that soon enough and will likely end up wanting a bigger camper. If you buy a stout truck the first time, you can do whatever you want.
The extra width makes no difference because the camper is as wide as a dually pickup anyway.