A system like that would work for your needs but that one specifically won't, as it is designed for batteries with a much higher AH and amp draw as well as charging amps then what these have or use. All you really need is an auto-isolator, some cables of the same size as is on there now and a fused AUX accessory power buss. It is important to remember that no matter how many batteries you have, the stator or charging system only has so much above and beyond what it needs to run all that came with it from the factory. And that's only about 12 amps.