First, make sure the ending rate schedule applies for your customer. You can check a rate's applicability by clicking on "View Electric Rate Detail," located below the ending rate schedule selection. Then click on the Rate Applicability tab.
Generally speaking, the higher the kWh offset, the better a rate schedule with expensive energy charges would work. If the kWh offset isn't high enough, it might be better to stay on the same rate schedule. You can choose different applicable rate schedules and see which one has better financials.