Good advice. Regarding the panels, my poorly worded question was what size of panels and their arrangement. I was simply thinking of three large panels, say 350-400W each, arranged in series. Unfortunately finding a 400W panel that is under 72” long is a challenge. I understand the concept of matching the V and I of the controller to the panels. But is there an advantage to choosing more smaller panels and arranging them in series/parallel to maximize the wattage output? I can reasonable go 5.5’ x 12’ total and still have some walking space around the panels.