everyone, i need help with a truck/truck camper questions.

this is from an rv place near my city. the guy told me another f150 customer bought this camper.
he has airbags on 30psi, then lowered 20 psi he said because it was too high. so I'm assuming air bags yes would be needed.. but maybe not as much as i suspected.
and i believe this was the 770r model ? mine if i get it ( 625 model) it should be lighter then this.