Where do you store hoses, chairs, etc..

Hi, I am considering a 3023, I have 4 children. We had a full size trailer, which had lots of storage. My question is where do you store your water hoses, sewer hose, extension cords, grill, lawn chairs, since there seems to be very little exterior storage.
Also how heavy are the upper cabinets, can they be easily removed full or is it necessary to empty them before removal. Thanks for your expertise.