Adding Air Suspension on 2008 Suburban

[Teddy Bear 337]

I have a 2008 Chevy Suburban 1500 2 wheel drive with the Delphi Suspension system (Air shocks with coil springs). We have just purchased a travel trailer and it appears to be a little heavy for the suspension and I have decided to change the coil springs out to an air bag system for (Hellwig). I am wondering if I can hook the new bags into the old system and send air to all 4 items (2 shocks and 2 bags). Would this work by just plumbing into the dryer line on the old pump. Shouldn't this allow the systems to work together and at the same time with the two level rods to manage the highth of the vehicle. If someone has any ideas I would love to hear it.