Larry_fisherman

It is possible... maybe also take a look at the off-grid experiment thread to see real world challenges

My only comment would be when spending this kind of money on a system see if you can get to the increase in cost for a Kodak OGS5.6 or other with a 450V MPPT than the 145V in the Sacolar. It just gives more flexibility with the current range of higher voltage panels. The Sacolar you cannot connect 3S of higher voltage panels. R10th might look cheap but it can hamper you going forward.
 

As said by mzezman, you are light on panels (estimated average 10kWh generation per day), but I also think you could be overweight on batteries. With 4x100Ah batteries at 48V, you're looking at basically 20kWh of storage, when your total daily consumption ranges between around 22kWh in summer, and 27kWh in Winter. It could be more cost-effective to shift more consumption to the day, starting with the pool pump on a timer. Let's say you go for 3 batteries with 15kWh of storage, that should get you through 2 hrs of loadshedding, if not most of the night, and you can always plan such that you can expand easily later. After saving around R30,000 for a 5kWh battery, you could install an additional 3000W of panels to max out a 5kW inverter and have capacity to generate very close to your total daily demand, probably achieving it on most days. All still while being close to your original budget. Just a thought, my 2c, to be evaluated by an installer.

Give @Steve87 a shout! 

You are a bit low on the number of panels - 1920w is not going to be able to charge that battery bank on low sun days / winter AND run the house. Rather save the geyser conversion to solar and use that money to add panels - your whole home will then benefit, incl the geysers