if you have the money, strongly consider a compact, relatively light version of a 200Ah LiFePO4 battery without a battery box, such as the
Baintech 200Ah as this double the capacity which may negate need for solar panels or a DC-DC charger, adds Bluetooth smartphone app to see what is happening, and maximum discharge current of 200A which allows for use with 2000W AC inverters (although you almost certainly don't need these) - if going this option, you will also need a small Anderson plug box which has USB outputs and 12V cigarette lighter port.