

It’s not hard to make a useful website that’s small. You just have to avoid using javascript libraries and keep images to a minimum. There are a number of static web page generators if you don’t want to write HTML yourself.
Keep in mind that a 50 kB page is about a 15 second load on a typical dial-up connection. Before high speed internet, almost everyone kept their web pages small.





I would use point to point wireless links between the buildings. Then connect an access point to the link to provide WiFi to the building. Something like the Omada EAP211 should work well for the link.