Network Question Using Dell PowerConnect 5224 and 3048 Switches (GHOSTING)

The computer network of the school is run on static IP's which are assigned to the various workstations, switches, routers, and servers. The problem is that when the Network Techs want to ghost a group of computers they have to bring this ghost server which is basically a server workstation, monitor, switch, and all the necessary peripherals on wheels to the lab computers on the network so they have to be rolling this cart around whenever they need to ghost. They have tried sending the ghost out over the network but the problem there is that all the computers are on the same VLAN and subnet so that when the image is broadcasted over the network the traffic is too much for the switches to handle and bogs down the network with unecessary broadcasts. The ideal solution is to send the ghost image over the network from the main server room only to a group of lab PCs. The network is based on the IP scheme 10.0.0.0/16 which has a subnet of 255.255.0.0 but we want the broadcasted image to only transmit to IPs in a scheme 192.x.x.x which would be the labs IP scheme. We want to send the image from our IT office over a Dell 5224 Layer 3 Switch. So the flow of data would be from the ghost_server => the layer 2 switch connected to the main_server => the layer 3 router in the main_server room => to the layer 3 router in the destined closet that controls the desired computer lab that needs to be ghosted => to the layer 2 switch that the PCs of the lab are connected to from the drops that lead to the room. I have come up with some theories however now it is time to develop some physical implementation ideas.

 

1)Put the Lab on its own VLAN