Replying to On3p filthy rich

Hi I've been looking for skis next year and have come to a liking of on3p's filthy rich ski and wanted to confirm on what size to get. I'm 14 years old weigh around 115 lbs and around 5'6 tall. I would also like the ski to last me a few years to so I don't have to go out and get another pair next year. I know tht on3p skis tend to run bigger than other companies since they measure after they press the ski, but also in contrast to that since the amount of rocker the filthy rich ski has it tends to feel shorter. I was thinking that the 161size would be a good fit for me and just wanted to confirm or get any suggestions from other people thanks.