Note, I have absolutely no plan about electronics, that's why I'm asking you to have a look at my build before I burn my house down
It is said "Knowledge is power..."however , it should also be said "One should have knowledge before messing with power.. "
I'm pretty confident that it should work, because every choice I made in the "design" is based on something I read. Now I'm here to seek confirmation of my plan, correction if I made mistakes, and general advice.
I have modified your drawing with the addition of a connection that so many "with no plan about electronics" do not take into account.