I agree with Lenny, the 4 battery & 400-500W of panels is the minimum system size I would go with if you are going to go through the effort. You need to understand/determine how much DC you will really need based upon usage from your fridge to lights (DC and AC) to other electronics such as TV and Sound bar. A 500W system can be expected to provide ~30A of charging current on good weather days over several hour window. Based on that you could replace ~100-150 AH (Amp Hour) of usage on a typical good day. This should cover a decent amount of general usage though your residential fridge, assuming that is that you have as said you already had an inverter, is the item you need to understand the usage for in addition to the general electronics.
A residential fridge pulls 5-7A AC I think which is 50-70A+ DC via the inverter. Even if it is only running 15-20% of the time, you are consuming at least 180 AH (5A AC -> ~50A DC * 24 hours * 15% duty cycle) just with the fridge. A situation like that will drive you to needing a larger battery bank and/or array setup to keep up with that.
Food for thought - your mileage may vary