Ok. So I plan on dropping my truck in the next couple of months with a 4/7 kit. Since the roads around here are really shitty I want to have either air shocks or helper bags that I can air up to about a 4/6 drop and maybe the ride wont be so terrible and bottom out so much. I also want these for towing on occasion. Which would be best for my needs? Truck is 2007 ECSB NNBS.