New owner here. Just purchased our first Catalina, hull 292. We need to move the boat from St. Joseph, MI to Duluth, MN. I would like to upgrade the house battery bank to four Trojan golf cart batteries and relocate the starting battery. I have read through many of the other posts regarding electrical upgrades. At the point I was hoping to just upgrade the batteries now and deal with other upgrades later. Is it possible to just upgrade the batteries for the journey without upgrading to an echo charger or making other upgrades?