I would plan on doing laundry every 3-4 days and take clothes accordingly. Going any longer than that would result in a lot of clothes, especially considering the number of towels for 4 people showering each day.
If you plan on doing a lot of cooking, rather than eating out a lot, I would plan on grocery shopping every few days unless you have lots of storage room to put the food.
I carry a small tool box with the basic tools. Have never needed to do any significant repairs, but good to have the basics just in case.