Depending on region and season, Solar is not intermittent. The sun goes up around 6:00 and goes down around 18:00, shines all day.
A 500W solar panel costs here about $80.
So with your idiotic 25cent per kWh, the panel is paid off in a week or two.
Obviously you have think about battery and inverter. You can go small on the battery if you dump surplus into the cooling trailer and surplus on top of that into the water pump and finally into the bitcoin miner. If your cooler is good enough, it stays cool over night. And battery only needs to cover your LED lights and your internet connection.
So, the question comes with your intermittency ... how do you have to plan, if you have a rain season or something where you have 3 or 4 month lots of clouds? The cooling trailer etc. should be no problem to keep running. And you most likely need a panel more than under optimal conditions.