Your air bags will do essentially the same thing as the CHF. The CHF will aid in keeping your coach from swaying and air bags does the same. I believe the CHF could have been cheaper for the same results. But, if you want to tighten up your coach, you can always do the CHF. If it was mine, for the price, I would do it.
2003 Pace Arrow 34W, F-53 V-10 22,000#, 5-Star, Avg 7.7 MPG, ScanGauge II
WiFiRanger Elite Pack, WeBoost 4G-X, Voltage Booster,.Progressive Industries EMS
Water Softener, Safe-T-Plus, Koni, Centramatic Balancers, CHF, Rear Trac Bar, EEZ TPMS