Honestly take a break after that book, because A Feast for Crows is so awful that you’ll need to come from reading something good just to get through it. A Storm of Swords is definitely a good point to stop and take a break from the series.
: https://www.reddit.com/r/books/comments/3pghw3/do_you_ever_take_breaks_in_the_middle_of_a_series/