Okay, well, the search for the most ideal water heater has been rather difficult. The electricity-consumption on the all-electric models has been pretty high. Since 1500 watts is the best I seem to be able to come up with, I've opted for this model. It has a considerably lower amp requirement than others I've looked at, and while it is still 1500 watts, that is better than 2000. We will just have to be careful when we are using it.
At this stage, we plan to still be on-grid for the most part, so a little extra power consumption isn't too big a deal. We will just have to be sure we're not consuming much power otherwise while it is reheating.