I break loads down into categories. Those that will be constantly running and those that will run for short periods, high and low draw, and whether the load is available in LVDC or only available in an AC version. The build I am working on now is a mobile, so I am focused on avoiding extra weight and maximizing efficiency due to a lack of real estate for PV panels. Therefore, constant and/or light loads such as air handling, comm, refrigeration and lighting will be LVDC (24volt), while intermittent heavy loads will be AC. One area where I must compromise is my professional audio gear which requires AC and is a near constant load, so I will mitigate the losses by installing a smaller dedicated (300watt) inverter for that while using the large inverter only for larger intermittent loads that require it, such as clothes washer, coffee pot, convection oven, etc.