Battery / Mppt charge controller question

[Mikites]

That’s a great setup markp [8D] 45 degrees in each direction is pretty dang steep though! At 30 degrees off axis the solar radiation available to the panel is 50% of optimum, so 30 degree total separation between sub arrays should roughly achieve a max output of one in any condition. A flat panel usually has a slight advantage over an angled one in cloudy conditions, giving you a nice bonus when reducing the difference in subarray angles [8D]