"I would like to buy another one in a few years, at least before I get too old"
I can't believe you said that^^^. You're 27 years old and I ensure you, you'll never be to old to own a Raptor. (As long you have a driver licenses anyway). With all the extras you have on it, you should get close to $50K, if not $50K.
Now if you going to sell it, just to buy another new truck, I would say keep it. Look at the prices of new trucks, even the 2 wheel drives prices are hovering close to $50K. Now if you are going to sell it and buy a decent used one, press with selling it & once you get your finances straight, you can acquire a new one.
One thing about life, when you are young it seems like time is in slow motion and you never get where or what you want, but now that I'm older time seems to fly by & now I just want it to slow down to enjoy what I have with the friends I have acquired. I wish I can go back in time to correct the **** ups I have done throughout my life, but I can't & you can't either. So Live & Learn and press on. It's just LIFE!