Ask you this. Would you rather have it and not need it, or need it and not have it? Why be about at the max limit of a 1500 every time you tow? What happens if you wNted to go to a bigger trailer, or carry a golf cart too? You couldnt.
If this is a truck to get mulch at home depot on the weekends get a 1500, if your going to tow 10k pounds more then a 100 miles more then once a year then go 2500. Id you want a tow the state of nevada then buy a 350/3500 dually diesel.
Do it right the first time.