I do a ton of this sort of installing in my line of work. Two issues I see is the fact the your romex isnt in an approved connector at the switch location( this doesn't apply for the low voltage side). And secondly you need to have access to the driver. Otherwise it looks pretty good. I actually just put in about 500 feet of LEDs almost the same as the one shown in the video.
What's the output wattage on the driver. How many feet of LEDs is it good for. Also good to note that on the load side of the driver a lot recommend that you not go any farther than 30 feet or so until your connection point at the lights.
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