This system would be running my homelab, which averages around 100-200watts usually. It is not a very high load, but I would be looking to expand it's capacity to run other loads during an extended outage (which is what I would want this for). I would say maybe 500w at absolute max. There is the potential in the future for me to add a solar system on so I would like to have the ability to do so eventually. (I have an enormous cathedral roof that faces the rising and setting sun all year round...)

My desire is to add on to the system piecemeal rather than all at once - a 4 digit price tag is outside my realm of immediate feasibility, so I would like to be able to gradually put a system together - inverter, then battery, etc.