Windows Server Updates in succession

Greetings SysAdmins. I am looking for a way to automate monthly windows updates for some of my servers. Currently I do them manually during maintenance period. The somewhat unique part I have is that they have to be done in order.

server1: Update, Reboot, back on; then Server2: Update, Reboot, back on; then on and on for 10 servers.

I'm open to ideas, we have (shudder) WSUS but if you've experienced the ability to do updates in this scenario in other apps I will explore. Something ideally that can determine that the server has rebooted and move on to the next, or say server1 wait 25 minutes then server2 wait 25 minutes...

Thanks