I'm like 5'9 - 5'10ish. They are 180's. Last year I skied 171 anthems, and they felt a little short. I donno. And I have no idea if I'm still growing, maybe, im only 17.
They look pretty good man. They may be a little long at first, but you will quickly get used to them and after a while, not even a while, you won't even notice the length.
I'm 5'9 155 and also 17 i ski 176 dumonts and they are not even close too long. Dumonts come in 181 and i dont think it would be a problem to ski those, you will be great with that ski.