With 600 or so, you should do fine. If doing fall/winter camping you'll need a little generator assistance. Heater run time and short days (less charging) will probably use up your batteries rather quickly. We're running about 800 watts and supplement with the generator daily. 2 to 4 hours daily run time is usually plenty! But, we watch too much tv (the inverter powers up most of the unit when on) and we camp with the low temps in single digits to teens with short nights. The panels simply can't keep up!