Wow, thats awesome.
Should work out fine. I have a similar install that has MLV Transformers and switches located in weather proof enclosures out in the environment.
All on the same project there is one on the side of a guest house, 4 out in a garden area and 3 on the side of a barn. This was a takeover project that is still growing and the switches in question have been installed for a couple of years now without problems.