Hi, I'm a hobbyist photographer, still at very early stage of the learning curve. We have D5200 and these lenses: 18x55mm lens 1:3.5-5.6G 55-200mm lens f/4 -5.6G ED I noticed I take much better pictures with 55-200mm lens f/4 -5.6G ED, but a photographer-friend said we should sell both lenses and get one prime lens, and she recommended: Nikon 50mm f/1.4G. Another friend said, he knows I will want to take tons of pictures of my daughter (who will join us in late June) – and said my choice should be 35 mm f/1.8G. What would you recommend if I have only $400? Thank you!