I see this is really late, but I just found your site and I'm sure you have already found a solution to your problem. Other than using ARD and if you are running OSX which I'm assuming you are...you could use a firewire cable to connect the two Macs....just install the apps on one computer and target that computer to another computer and use Migration Assistant to copy the apps over or the entire computer including accounts. You only have a few computers so it should take long and if you have more firewire cables you could target more computers as you finish them to go faster. I too work in IT for an educational institute so we are always asked to do things with the tools we have...they hate spending money....this is using tools you already have. It's not the best/greatest solution....but it works