You do not necessarily have to become all these things. There are whole communities around this sort of a thing - Will Prowse's DiY Solar Forum (https://diysola

You do not necessarily have to become all these things. There are whole communities around this sort of a thing - Will Prowse's DiY Solar Forum (https://diysolarforum.com/ https://diysolarforum.com/) is an awesome source for learning as an example. The setup you describe - lacking microinverters - I think there are options there short of wholesale replacement [disclaimer: I, too, am a self-taught in this field, and so am likely wrong in non-trivial ways]