How do you pick your main champions?
I am pretty confused. I want to start ranked, but I want to go in with my best picks, a champion pool. I main Top lane and I might take either Mid or Jungle as my secondary. Are their any tips to making a champion pool? I want 8 champions, four for each role.
By the way, I have confirmed one champion- 

practically a 1 trick Fiora lol
I see a lot of High elo players (Diamond+) one trick and they were able to climb so i decided to do the same.
as a main but since they changed her too much I don't play her now as a sign of protest of the bad changes. Underrated champs for me are
I played them in Normals not in rankeds but THEY ARE SO GOOD. Fun champions are
and the champions by visuals are
I LOVE PLAYING THEM