Well... I think if I'm allowed to use my end game save, it's possible to finish it within 20 hours. I just afraid that we not only play but also chat and fix bug. Anyway, if I can't finish it within 2 days, I'll continue on Saturday and Sunday. I still don't have any plan yet.
I spotted lots of items bug in current 2.1a, one of them is major and need to fix. Check 2.1 bug masterthread for more information.