Ask HN: Help me with my side project?

I live in an apartment block of 87 units & one thing most people in it complain about is the poor cellular data reception. I have an idea of installing a fast wifi internet connection throughout the building & hopefully making money in the process. The problem however, is that I have very little experience in networking. Any reccomended resources that you think may be of assistance to me are highly anticipated! I however have some questions; 1. What's the best way to handle load balancing of connections from all 87 clients? 2. What type of routers should I use? 3. Is it possible to make everyone use/see the same SSID instead of having names like "Apartment Wifi 1", "Apartment Wifi 2", "Apartment Wifi 3" e.t.c 4. How do I ensure that that the building's walls have the least impact on the WiFi network? Further, what are the techniques, tips or tricks for achieving this? For instace, do I need special hardware (special routers designed to solve this problem for example?) 5. Also, how do I handle billing for such a custom built WiFi service? Any open source tools for example?