Preparing for a sabbatical 5 months of knitting

Starting April the 3rd I'll be on a sabbatical leave for 5 months! In the last months all I could think is: what will I knit with all this spare time in my hands?

Well it's very difficult to choose, so I ask you:

-Shall I finish my Icelandic sweather I've started 1 year ago?
-Shall I complete an afghan blanket I've started 2 years ago?
-Shall i crochet a human-size amigurumi?
-Shall I start something very challenging completely new?

What would you do?

Pic via | Blog Casa sé