Wow, what a canvas! Super inspiring that you want to do something with this. I'm excited to see picture updates as it progresses.
If you haven't seen it already, the following (free) documentary has some very interesting information about limiting (almost removing) the need to water in a very natural way. Highly recommended.
https://www.backtoedenfilm.com/watchfreeorganicgardeningmovie.html
Awesome thanks m8, I will be watching this tonight before bed :)