Peter

just beware of cheap KVM extenders as they dont always work with Mac USB keyboards and mice, due to the inbuild hub.

Use a gigabit network and ensure that you configure BOTH macs to suport jumbo frames if moving content.

Re scan files - if you send a quickscan files command from the MacBook Pro using the 'remote' controls list - it will send to all macs on the network with 'accept remote commands' selected

hope it helps

S