I am not sure what part of Louisiana you are in, but we did the same thing at Berryland Campers back in 2010. Berryland also has a used car dealership. They may have taken the truck in on trade anyway, but I'm sure having the auto dealership helped.
My advice....check the trade value on each item separately and make sure you get both at the trade value you are looking for. There are more places for a dealer to hide things when there are multiple vehicles involved.
I do not have any regrets doing it the way that I did. I did miss my truck though (2009 dodge 2500 quad). I fixed that two years ago and bought a 2012 1500 just like the one I had (except the 2500 which wasn't needed). Same color too.