Make sure you have a good understanding of what your insurance company will and won't cover for DIY projects. Insurance companies can be skittish about unlicensed electrical work.
For something like this, a worst case scenario is an electrical fire during a drought or a kid gets electrocuted. If you do the work yourself, you're likely on the hook if something goes wrong, even if it's due to a faulty part and you have an umbrella policy that covers liability.
This channel on youtube is an excellent resource and explains everything for anyone one who is a DIYer.
https://www.youtube.com/@WillProwse