It's surprising to see a top-loader that has such a heavy motor. Most top-loader washers in the US are less complex relying upon a simple motor and belt drive system and not direct drive.
The output figures are nice but unless the power is stable and clean your appliances won't last long.
The 800 Watt figure is not enough to power all the stuff mentioned. In fact after inverting the output to a clean 120V AC (NZ probably uses 240V) you'll have only around 700 Watts...and that's only enough for maybe a TV or computer but not all of the appliances listed. In the US the typical toaster uses 1500 Watts. A hot water heater (around 40 gallon) uses around 5000 Watts (peak).