Residence network

Good day,

I have recently gone to university and i have moved into a student residence.

I want to set up a network where a few users can game/ copy files between 3 buildings.

I have attached a picture of the basic idea i was thinking off.

All pcs would be on same network range as they would see each other.

What I would like help with is:

A:I want people to have to login to be able to access the network: like pppoe.
Then some users will just be file copying, some just internet and some both.

B: What priority setups should i run on the wireless bridges in order for several people to have access over that wireless. Cause with no management, when one persons copies it kills every one elses traffic.

C: ANy other tips and advice

Thanks
RES NETWORK.jpg

i would love it solved as well