Hey @tannenbaum
I am running a custom built Farmbot near Stuttgart for more than 2 years. I would recommend to take a look at the BOM file, that our Farmbot-Europe members created.
This is a good choice for sure. I made the experience that for some plants, especially those with huge leaves, the bot can’t reach the plant itself when watering, so it has to spend a lot of water to get the plant watered.