Just basically what I recommend is work from the outside in. Do the general stuff, the stuff you can see is messy and know is in your way. Then work into the closets, and vacumming, and dishes, all of the accessories. Start from the outside in, and the curtains part save for another day, because your cleaning the cars before you shop, and it just is too much work. At least clean the car after you do the shopping. Work from big to small, and Good Luck sounds like you will need it.