I bought a TT and now more questions

Get an Equal-i-zer hitch. It will make towing a pleasure, not a chore.

So far as your wife overloading, there are some things I used to do when travelling with a smaller trailer:

1) cook stuff ahead of time at home--like stews, soups, spaghetti sauce, freeze if desired, it will keep in the RV fridge for at least a week if you start frozen
2) make a simple meal plan so you know what to take and what to cook
3) remember that there are Walmarts & grocery stores everywhere, so it's not a disaster if you forget something
4) get a few recipes for simple "skillet meals" that start with canned/frozen ingredients & use just one big skillet
5) while travelling, keep a running list of items that you reach for but don't have--then buy ONLY those extra items to keep in the trailer
6) limit cleaning supplies to basic and all-purpose--you can clean more at home if necessary
7) start out with minimalist everything.... then add more ONLY as needed