One trick vs champ pool
I'm currently Gold 4 and pretty new to the jungle (used to one trick maokai support). I've spent a long time cycling champs in normals and now have a champ pool of Karthus, Zac, and Nocturne. I'm aware that Nocturne is by far the more meta champ especially at my elo, however I have more fun playing Karthus and Zac. My wr is garbage with Zac but get pulled into picking him when my team has no engage or frontline. My wr with Karthus and Nocturne is pretty good at around 60%
I'm looking to climb and improve at jungle and I guess I'm torn between sticking with my champ pool or just locking in on Karthus (more fun but less meta) or Nocturne (less fun but stronger and more blind pickable).
I guess I'm wondering what most people find success with in terms of climbing. Would I be trolling by locking in Karthus every game? Do most people just play one champ when they're looking to climb?