Post maiden voyage, deciding on modifications?

Airbags going for $600 not mentioning dual valves and compressors are not that cheap anymore.
I used to have them on 3 previous trucks, but when I put my camper on new truck, turn out I don't need them. Even I would like to install them for comfort, new trucks don't have good space for them and I did not want to go for monkey job just becouse.
Even with 6500lb on rear axle, the truck bed still leans forward and I have to put planks under front wheels to level the combo.