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If you intend to cover that lovely set up in, I would put a sheet metal cover over the top and then a wire mesh around the sides to allow full free flow air for cooling.
Right now I’m not too far off what you described, I have a small inverter 2k watts, a battery bank with 3k inverter (solar), and now this 12/2 with an St-10, now it’s just time to make the systems work together for my needs.