Those are very nice, thorough instructions, but use the forums as a Resource and search before you “Invent” something - there are LOTS of people here with lots of installed systems - most of the common challenges have already been figured out and posted here in some form or another - like this:
Truly, keep posting things you figure out how to do and post it here for all to use - just save yourself some time in the future and search the forums before you tough it out and engineer it yourself.