Couple of questions for you ALP experts :)

[Tman]

Last question. . I think lol can I ground both the Li system and alp system to the same ground? Thinking about keeping the Li on the back instead of nothing

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Yes.
+++++++++++++++++++++++++++++++++++++++

Side note : you can also use the ground as a cut-off.

You can use a switch for the ground to shut-off any device , which i prefer because there is no danger
to trigger a short-circuit (like if the wire touch the body by mistake if you use the positive as cut-off ).