I'd go with Plan-A, and just run the wires up under the carpet.
Be careful with the front centre console carpet, its got a solid velcro-style securing bracket on the vehicle-rear end, but its glued on the vehicle-front end, so you can only bring it forwards and sort of fols it out of the way - not too far, though.
If you want some pics of what I mean, lemme know.
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