As Jeff said, if you want “Timer Jobs” you need to first know to look under “Monitoring”… but who remembers whole structure of central administration? This was main reason why Jeff came up with idea of one page with all central administration links
Running Central Administration on more than one server in the farm is 100% supported, and indeed a recommended best practice.
Load Balancing Central Administration is 100% supported. And even if it wasn’t it wouldn’t matter as you can simply take load balancing out of the equation and hit one of the machines directly.
Implementing Kerberos Authentication for load balanced Central Administration is 100% supported.
Implementing Central Administration on Port 80 or 443 is 100% supported.