We are going to Colorado this weekend to board and my wife has decided to drop the skis and learn to board. She weighs 125 and is a beginner. I am looking at 3 boards, but I don't know how good they are for beginners. K2 Luna 146, Ride Vista 148.and Burton Sterling 149. I want something big enough for her to ride in Colorado and something good in the ice back home on the east. Are these boards beginner friendly?? Any Suggestions??