You will find that those of us that have been doing this for a while are all driving DRW trucks. The newer guys, guys that need a daily driver, still working, will tell you a SRW truck will PULL anything. And, Yes they are correct they will pull anything. But with a trailer that has a 14K GVWR you will weigh close to 2,800lbs on the pin OR MORE. My trailer weighs 14,500lbs and I have 3,200lbs on the pin
Your trailer is already short on brakes. A 14K trailer with 2x6K axles is asking the truck to stop 2k of the weight, assuming the trailer brakes are @ 100%.. One trip across Kansas in a good cross wind will make a believer out of you that your NEXT truck will be a DRW. One trip out west down a 10 mile 6% grade will tell you a good exhaust brake is a must have.
Happy shopping