Solar powered Sheep.

My wife and I keep a small farm of about 22 sheep. We live in a southern state and controlling the heat is always a chore. This spring I am going to add solar to our boys area so that they can have fans in their shelter. I am looking for any guidance or improvements I can make to the setup below. I know enough about electricity and Solar to know I'm a novice at best so any help is appreciated.

Aiming for 600 to 800 watt Input over 3-4 panels. I'm looking at Renogys 200 watt Panels.

Load will be 480 watts for most of the day.

These will be on the southerly facing roof of a carport with no obstructions at about a 30 degree angle.

I have covered space under the carport for a charge controller and battery/inverter setup. I intend to house the components in a plastic tool box to reduce dust.

Is 320 watts of overage enough a margin? is 120?

The panels I am looking at are 24v should I get a charge controller that allows me to have the panels in series for higher voltages?

I will start with this and answer any questions you may have.