Thanks for the replies.
cewillis - I like your idea, but no shop or talent
Super Dave- I read so much on here about air bags giving height, but also instability, used mostly for side to side levelling. No experience with them and from the replies here, a lot of people swear by them. Overloads - wish the truck came with them, that's why I thought the Super springs would work.
1mtnman - thought about Timbresn and Stableloads, but was in a quandary. Again I thought the super springs would compromise here. Are these Bilstein's the 4600's. The dealer I talked with thought the Monroe shock would work better but also offered the Bilstein.
Now I have lots to think about and will get back with my decision. thanks again