A:AnswerYou will need the light strip plus model, which is the newer one. I found out the hard way that these are not compatible with the extensions. I also believe that even with extensions you can only go to around 30ft per light strip
A:AnswerThey plug into the wall. A little cable management will make it look seamless. I use them in my kitchen as well. These can work anywhere in your home, as long as you plug them in. If you cut them, then they won't work. You'd have to buy another set for a different area of the house.