Thanks all. Actually Blair, I did do a search after the fact (I know, I should've done it prior to the posting) and read with interest your questions. I am really quite concerned with the additional problem of hooking up at nite or whatever. With my rig being as long as it is, sometimes I get into really quite tight situations and have to come at it in angles etc.
I did cancel my order with Camping World this date and not wanting to be penny-wise and pound-foolish now am getting information on the Kelderman Air Ride for the 5ver itself. I guess I should have explored more options initially, but at this stage of the game leastways I am out no dollars yet. I called Kelderman and actually their unit isn't that much more expensive. However, I was told by their chief installer that a first-time install could be expected to take in the neighborhood of 8-12 hours (he can do it in 5-7). Anyhow, thanks for the responses and if others have additional thoughts, please share.
Roger