Oh ok, to be honest I would have thought it would have been the other way round. I would have thought the flash would have been too much and would have startled themLong answer: Continuous lighting isn't suitable for photographing new borns, and is probably more than capable of causing serious injury - although it has very little power in photographic terms, it's blindingly bright.
Short answer: Get flash.
And this.^Are you planning to use the lights for more than just one photoshoot of your friend's baby? If it's just for this one shoot you'd be better just finding a big window and using natural light I would have thought.
Have you every photographed a newborn? As someone who's not long had a baby, employed and watched a professional newborn photographer and then attempted to photograph said newborn myself I'll tell you it's a lot harder than it looks! Lighting is probably the least of your concerns!