Buy yourself a gigabit switch
Connect the router to the switch and connect everything else via the switch, the sr102 is only 100mbits, which in itself should be enough, I have a similar setup and can quite easily stream multiple hd files from a mac onto multiple apple tvs my sr102 only acts as a dhcp server and it's wifi is supplemented by additional access points around the house.
You may well find that your cabling doesn't even support 100mbit, poor cabling will result in it falling back to 10mbit mode
Sky broadband MAX
The force may be with them, but it won't prevent their assimilation