I am designing a solar panel array for my home want to go off grid or reduce the utilities charges, but the costs and the budget make me ask this question. Is it better to have higher voltage and low amps or just enough voltage to trigger the string inverter and the rest of the panel in amps? ex: string inverter rated 3.3 kwh, trigger is 150 volts dc and 600 vdc max only have 16 165watt panels 36 vdc. = ?