N is the best supporter in the format rather you like it or not. It also fits in every deck so far. Bianca has a limited opportunities to be played where N hasn't. Against Keldeo you will need the N so badly, and against any other deck since it can change things around even if you are behind in prizes. It sets your opponent back a few turns and probably also helps you out.
You should not remove the switch, it is needed when playing against rayeels since they throw prlz at your face from the start, which would make them beat you in the end.
-2 Skyla
-2 Random reciever
+4 N
You only have 4 draw supporters in a total! I won't believe that you have a great chance of getting that turn 1 60+ without more supporters, to get your hands on the different cards needed for Blow through turn 1 without more consistency.
You should not remove the switch, it is needed when playing against rayeels since they throw prlz at your face from the start, which would make them beat you in the end.
-2 Skyla
-2 Random reciever
+4 N
You only have 4 draw supporters in a total! I won't believe that you have a great chance of getting that turn 1 60+ without more supporters, to get your hands on the different cards needed for Blow through turn 1 without more consistency.