Choosing the right size of skis depends on several factors such as your height, weight, skiing style, and ability. There is no exact formula for determining the right size ski for you, but there are some general guidelines to follow. Here are some tips to help you choose the right size of skis:

• Height: Your height is a good starting point to determine the length of your skis. A good rule of thumb is that your skis should be between your chin and the top of your head. For example, if you are 6 feet tall, you should look for skis between 170-190 cm long.

• Weight: Your weight can also affect the length of your skis. If you weigh more than average for your height, you may want to consider longer skis.

• Skiing style and ability: Your skiing style and ability can also influence the length of your skis. Beginner skiers may want to consider shorter skis for easier turn initiation and stability, while advanced skiers may prefer longer skis for faster and more aggressive skiing.

• Terrain: The type of terrain you will be skiing on can also affect the length of your skis. For example, if you plan to ski mostly off-trail, you may want to consider longer skis.

• Ski category: Different ski categories have different waist widths, which can affect the length of your skis. All-mountain skis generally have mid-fat waists that range from 80-110mm. Carving skis with a skinnier waist and a smaller turn radius can be skied at a shorter length than an all-mountain or freeride ski with a larger turn radius and fatter waist width.

• Rockered skis: Rockered skis are easier to pivot between turns and can be skied slightly longer than comparable camber skis.

Within your suggested ski size range, there are several reasons to choose a shorter or longer ski. A shorter ski will be easier to turn but not as stable as a longer ski. Ultimately, the right size of skis for you will depend on your personal preference and skiing style.