Most of us get along just fine with a single genny such as the Honda 2000. 11 seasons for us. Over 150 nights on the road per season. Guess about 2 weeks worth dry camping total. Very seldom have we been dry camping someplace where we really missed having an AC.
Rather than spend money on a second genny to be carried around & seldom used, we spent the money on enhancing the battery bank & installing an inverter charger. This eliminated the need of running the genny for low power needs & only meant that the genny is needed for recharging the battery bank. During this time everything else that needs charging is plugged in.