What would you power first in a tiny off-grid shed: ceiling fan or general battery bank?

I am setting up a small off-grid shed that gets pretty hot/uncomfortable in the late afternoon but only needs light and airflow for a couple of evening hours. \- no existing house battery \- roof has good sun, interior has almost none \- fan would usually run low or medium \- one work light \- I would rather not move a power station back and forth

A general panel + battery bank would be more flexible later. The simpler alternative is a dedicated unit like the ventallion solar ceiling fan or something similar which keeps the fan and light on their own panel and battery. That is less expandable, but it also means the shed gets good airflow without a giant system in place

For a low-load outbuilding, would you start with the dedicated appliance for comfort ability or put the same money toward a small general solar setup?