First, you’re mistaken regarding CoG. It “could be” at the center longitudinally, but likely is father forward than that. CoG is where it is.
Regarding your other question, is it a short bed camper or not? At 9’ long, it would be one of, if not the longest short bed suitable campers out there.
Other than that, you have zero issue with weight.
And even if it’s not a SB camper, it’s very light weight for a camper that long. If it doesn’t have a rear overhang that would prohibit running with the tailgate on, I’d consider running it like that.
And even assuming if the CoG is a foot or so behind the axle, if you do the math it likely doesn’t remove enough weight off the front axle to be of worry.
