What general level should I be before taking on the league in platinum?

So far my team levels and moves are-lvl 52 Torterra1.Earthquake2.wood hammer3.rock slide4.crunch

-lvl 50 gallade1.brick break(will change to close combat)2.psycho cut3.stone edge4.night slash

-lvl 48 floatzel1.surf2.waterfall3.ice fang4.dig

-lvl 47 houndoom1.dark pulse2.flamethrower3.iron tail4.thunder fang

-lvl 46 Staraptor1.aerial ace(will change to brave bird)2.fly3.return4.close combat

-lvl 50 Raichu1.thunderbolt2.strength3.rock smash4.grass knot

Sry for the long post, my first time using the forum and I thought maybe I could get any advice on changes I should make and the general level.

Pleaselog inorregisterto add a comment.

Whenever I challenge a Pokémon League from any region, I always make sure all my Pokémon are somewhere between levels 60 and 70, sometimes 80. This ensures I can take most any hits thrown my way while giving me powerful moves to use in return. Note that actually leveling up your Pokémon to this level is very arduous without cheats. You may want to research the battles you face beforehand to reduce the likelihood of being caught unprepared.