Task Scheduler needed

Hi all,
Hope you are all having a good weekend.

Okay, I need some advise please;
I am working on setting up network load balancing for my server, in such a way that when server 1 become busy over say 70% CPU, it switches on server 2. Then if server 1 stay at 70% or increases for more than 15mins, it switches on server 3, and so on.
Obviously, I then need a system in reverse which switches them back down.

I think I now have a batch file which can wake the server on lan. And I also have one which can put it back into standby. - This is great, but I need something to do it automatically.

---Bottom line----
I think all I need now is a task scheduler which will monitor the cpu/ or network traffic, and execute programs continually.

The only problem is, the only ones I can find have two major problems;
-They will only allow one instance to run(so I can run the program again which is setup in reverse to standby the servers)
-The task only runs once, one run, it is disabled until I manually tell it to run again.


Can anyone please suggest a program which can do what I need, and avoid the two problems I stated above??



Any suggestions are much welcomed, Thanks.