If you do go the relay route, there have been many OGR threads on how to do this. For example, I copied this picture from this OGR thread.
These show automotive (illuminated LED) switches which I realize is not what you're asking about. So you would just have an inexpensive toggle switch with "any" current-capability rating. It's the ability to used thin/manageable wiring in the control panel rather than having to deal with 14/16 gauge wiring possibly over long distances. Also, in my experience, it can be a hassle trying to fasten/solder heavy gauge wiring to the "eyelets" or whatever your call the terminals of mini-toggle switches.
If you need help choosing/interpreting the specs or whatever of the relay modules, just ask. Many guys have gone this route and we're here to help!