Hi, I am new to the forum. I have been reading various topics for months. I have a question about the best options from the factory for a potential build with stove, water, heater, fridge, water heater, lights, fan, and assuming a normal prep (insulation, etc). I see options for extra battery, bigger alternator, plugs and sockets, and interior choices. This will be a cargo version with no interior, just front swivel seats. Any advice would be appreciated.