Ski size help

I found this really good deal on the some skis that are 170 cm. The only problem is that due to injuries, I had to sit this year out and I can't ski until next season. I'm 5'8" right now and my doctor said that I shouldn't grow too much more than what I already am, maybe like a few inches max over the next few years. Would the skis still fit by next October, or would it be a bit of a stretch?