100mb you can have around 300-400 player but you can't download, see online movie bcz you make a huge lag on server(so you need to limit download at under 1mbps) and to host a server on personal pc is a bad idea because now all can give ddos (for example i can give you ddos with loic i have 1GBps and loic is a shet ddos ) so you need a ddos protection and also you need for cap 60-90 need 8 gb of ram and for 100~140 need over 12 gb of ram and also a good cpu minim 4 core.