Everyone has an opinion on what is worth the effort, lightening, etc....
Keep in mind, there is a standard, the National Electrical Code, as well as the possibility of local building codes. I would recommend you start there as the minimum standard, which isn't too difficult or expensive to achieve. Also keep in the back of your head, should you decided to do an install that is not compliant with the code, and something does happen, insurances and/or code officials can make your life a living nightmare.