I am looking to purchase a used Platinum that will pull a camper maybe 10x/year. The camper is only 5000lbs but we may upgrade at some point to a 7500lb trailer. The best deal I’ve found in my budget is a 2013 and has the 3.31 gear ratio. I know the 3.55 or 3.73 tow better but as these aren’t huge trailers would I be fine? I don’t drive in a hurry but I don’t want to stress the pickup unnecessarily. I live at 4500 ft and camp in the mountains at 9000 ft. Thanks for your help!