Seeing how you write @Dorothy, thought I share something back …,
Who is this TTT?
Just so you know … the list has grown since then.
I’ll share “good” bits of advice here for you on your system … together we can rule this world! 
Ok seriously now, some of the more cautious (read experienced) okes here will step in if we go too far or fast for you, on this journey of yours … I hope. 
I do like how you read and investigate … Victron is really cool kit to do big things with, NodeRED and/or HomeAssistant is in your future too I see. Just keep your babysitter close by … send him here, not many people have the guts to do what you are doing.
Keep going!
PS. I press the button, then I read the manual.