There are some KVMs on the market which sends the signal over a standard ethernet connection.
You can place the KVM in the room where your rig is and then you need only a network connection to it. could be wireless of cause.

I think solutions like TeamView, RDP, VNC or similar products would not fit you because you loose to much speed. As far as I understood you like to work on the rig like sitting in front of it. So the wireless KVM is a choice or the other wirless alternatives already given in the thread.
RGDS