I've almost got this towing thing down. One more ?

You can start out weighing every ounce but you will slowly add things; a little water to flush while traveling, for example. It would be best to have either the trailer that your truck can handle with all the stuff you want/need or have a truck that can handle the RV and weight of any stuff you want. If you have to count pounds you are probably already in trouble of a comfortable and safe towing experience.