For in cabinet lights, cannot decide if led pucks are best option or how to space them. Widest cabinets are 17" plus on one wall and 20" plus on the second. Would 1 puck in each be enough for ambient lighting? Recommended size? I am not looking to showcase items in the cabinets. Where do the experts recommend I place the lights, center, forward, rear? Are other lighting options better choices (strips, or long bulbs? Appreciate any clarity you can provide.