I have two solar panels, one 140 watt, one 116 watt, mounted on Bimini, each with its own mppt 75/15 controller wired to battery. No connection to load output so for charging only. Daily usage around 110 ah. Panels will keep up with usage during day but will nor recover over night usage the next day. Considering adding two 120 watt panels to Davitts. No room for more. Will this be adequate in general? Series or parallel? What size controller? Any other recommendations?