I would suggest a ball winder and swift anyway, if you plan on having more hanks, and you never know how many of these you'll get.
In the beginning, winding the balls is fine, but later, it becomes tedious, especially with very thin yarn. Takes a long time, and your fingers become stiff and itchy and hurt.
Apart from this, I agree with the above comments.
-I need more friends like yours
-The hank looks beautiful. I wonder what you'll make of it.
As for handwinding it, I have seen another technique than the one presented on this page, which I have used.
(Maybe that's why my fingers got stiff all the time...)
The ways of Yarn are inscrutable.
I'm NOT a "miss", I'm a lady!