Please could you help me, I would like to move from bridged network to only routed network. Could you help me with settings, this is my scheme:

MK1 is main router, shaper
I want fileserver to be accesible for every PC in network.
On MK1 I am using, QT, PCQ to limit speed/connection, but behind MK2 there are more clients I want to give them some speed, but when I set some speed for ip of MK2 it will be speed they must share. I would like to set speeds for pc behind MK2(but this is propably not possible).
On MK1 I want to limit also traffic from fileserver to all PCs.
I dont want clients to see each other.
Please could you help me to set ips, routing table? I have no idea how to solve this. THANKS A LOT