OMG! Were do you think that you are going with that thing? No doubt that you have done a great job with it but you will be severely restricted on CGs that can be accessed, never mind using it for local sightseeing & shopping.
People grumble enough about a 3500 dually being inconvenient, I have no problem with one, but you are in a whole nuther world with your current beast.
If SPs, BLMs & NPs are in your future travel plans, IMO they are the best experiences, do some research for a truck & 5er combo that is comfortable & doable.
I can understand the reluctance to sell something that you have put so much effort into but you have a 500lb bomb to do the job that a hand held grenade will do.