We pick up our 1st 5’er at the end of September. It will have a residential refrigerator and 1000w pure sine inverter. The dealer will provide one battery. No generator or solar (yet). We typically stay in parks with full hookups with the occasional overnight with no electricity and like to drive no more than 300 miles in a day. With our scenario will one battery be sufficient or should I have two? Any suggestions on battery type and best wiring options (for two batteries) would be much appreciated.