I would do these changes:
-1 Acerola (Raticate has too loo of HP to not take a knockout)
-1 Lusamine (You have pal pad)
-2 Nest Ball (You have briggette)
+1 Brigette
+2 Nihlelego GX (To put the poisoned to get the in between turns knockout)
+1 Pal Pad (In place of Lusamine