Talk:Gameplay:Crew/@comment-24730509-20170112222859/@comment-30740695-20170113015523

yep wait for 2x skill up if possible and you can do as it suits you.

I do 5 at the times, this take me 1 hour to clear up all the copies and skill book.

If I do 1 at the time, probably will take me 2-3 hour...

but the chance are depend on the RNG.