Network usage and build opinion

Hi guys my internet speed is 3mb down spikes to 6 and 1mb up.
If I ran one 4 gpu machine with msi 480 8gb would me and my brother still be able to play fps games without seeing much of a difference? (We play escape from takrov)

Build link any opinion will be great and appreciated.
https://pcpartpicker.com/list/9y3PLD

Thanks for the help, and if I need to re word my question please tell me.