That sounds like you made a good choice as it stands. You don’t need a HD truck to pull a 3k pound trailer plus your passengers. I would’ve gotten a V8 rather than the 6, because you give up little in economy and have a whole lot more grunt. However, if you don’t need but simply “want” a 2500, the gasser saves you almost $10k up front plus burns regular gas and uses less maintenance. That’s presuming you don’t amp up your towing to HD needs and start driving long hauls. My suggestion would be to consider, however, the Ford 7.3 or 6.8 gas 250 over the 6.4 Dodge. Simply more capable. I’d say the same about the new GM gasser in their 2500. More torque and quite reliable. One last thing: you’ll get murdered on a trade on your 22 Ram.