RV A/C Efficiencies

I have heard that adding a soft start system can decrease current draw, but have not seen a cost saving to cost of soft start comparison. Mini split systems use an inverter controlled compressor. Reducing the heat load on a structure will reduce the run time of the ac. Sealing the duct system will improve the efficiency of that. Target cfm across the evaporator is around 400. Reducing cfm to 350 would promote latent heat removal. Increasing cfm to 450 would promote sensible heat removal. Adding a dehumidifier would reduce the latent load on the ac system, thus freeing capacity for sensible heat removal, but there is the cost of the dehumidifier as well as the operating cost to consider. A duct will sweat when the surface temperature of the duct is below the dew point of the air surrounding the duct.