I think they will add a scene or two to show how badass he is and make the viewers scared of him
I think episode 7 is too early for RW. I feel like Autumn Storms is when Jon climbs the wall and he and Bran's stories overlap (Queenscrown), Dany buys Unsullied, and Balon's death. It will set up the RW in episode 9 as well. Season 3 will have RW in episode 9, then aftermath in episode 10 as well as Jon's imprisonment by Slynt.
Season 4 will have PW halfway through, episode 7's cliffhanger will be Oberyn volunteering as Tyrion's champion, 8 will be viper vs mountain, 9 or 10 will have Tyrion's escape and Tywin's assassination.
I really hope that's how it plays out. I just don't want the show to lose viewers after RW