fell free to pm me if you got questions
and just so you know those switches are 12 volt switches, you can't use those, without relays, and thats more wiring and more money.
I think the cheapest way to go would be to go to your local hardware store, buy 5 "handy boxes", their a single gang box with tabs you can screw a switch directly into it, they look like this. then get some cheap switches and covers.
there 100 different ways you could go about it, there stackable switches, that 2 or 3 switches will fit in one of those boxes I linked. or there plastic boxes that come with 4 gangs side-by-side to each other, but I don't know how much they cost and the covers might cost more than buying 4 seperate ones. you obviously care about how it looks, so figure out what you like and shoot me a pm. I don't know what you can acually buy at hardware stores, I can order anything I want through my work so yea. lemme know.