This should be fine then.
i did not know if i could switch back and forth with a kvm without shutting anything down. I would like to be able to go back and forth easily between cpu's.
That's really easy, since KVMs are designed for that purpose. With my KVM, I had to hit the right Ctrl key twice to switch from comp#1 to comp#2 and back.
But since you have an input select button, there shouldn't be a problem to connect two computers to the monitor.