No, it's not overkill.
Air bags can help to level the truck left to right. On my taco the gas tank is on the driver side and all the appliances on ATC is also on the driver sides. I put 20 psi on the driver side and 5psi on the passenger side and the truck sits level. I've 5100 on all 4 corners. Not sure if it has enough damping for the OME coil on the front. Why not use the OME shock to go with it, should be a better fit.