If you want NS to think your cool I would recommend skis that are at least a foot taller than you for rail, 2 feet for pow...If you want to think realisticly 150s wont hold you back and wont look that bad, if you want to learn new tricks and enjoy your self i would say they are a good length. however, you ust still be growing if you are that tall so you might wanna get a bigger pair and that will save you money in the long term and wont make things too much harder.