Networking advice neede - Game cafe

[Chunkypops]

Hello,

 

I'm starting a small game cafe business in my town. Its just one other and its doing pretty well. I want to tap into that market and do it even better. High end PCs and good atmosphere.  

I have around 10 years working with games as a service, but want to step down from corporate and have my own place to administer.

 

My plan is to start with 20 PCs (10 High end and 10 Mid) and 5 consoles. I already have a 200 square meter place and the initial investment money.

 

My only concerns are regarding networking.

For starters the internet I can get a the moment is 300Mbit/300Mbit. I can get another contract with another company for 100/100Mbit and route browsing through this one.

What type of hardware would I need for a full setup with Steam cafe program and net cafe admin software? Router, switches, server? 

 

Also

Please let me know some ways I can avoid bandwidth problems with game updates.

 

Thanks,

Chunky