Sizing Question

I'm looking into buying my first set of skis. I've been skiing since I was about 6, but haven't been for about three years or so. I'm thinking about buying Ninthward Firstbloods in 180cm. I'm wondering if they're going to be waaaaay too long for me. I like the wider waist for an all-mountain ski, and I don't plan on spending any time in the park, but more on and off the trail in Utah, except for the occasional run through the terrain park for shits and giggles. I'm about 5'10", and 170 lbs. Am I going to feel like a retard trying to rollerblade down a gravel driveway on these? Any advice is appreeshed.