Elite Four Help

Hey, I'm about to go fight the Eilite 4, and I don't know if my pokemon are good enough, so tell me what I need to do if I hav to change my pokemon:

Venasaur, lvl 73: Return, Frenzy Plant, Razor Leaf, Cut

Clefable, lvl 30: Strength, Sing, Metronome, Dream Eater

Arcanine, lvl 31: Ember, Flame Wheel, Odor Sleuth, Double-Edge

Aerodactyl, lvl 27: Wing Attack, Fly, Supersonic, Bite

Dragonair, lvl36: Surf, Blizzard, Twister, Slam

Mr. Mime, lvl 41: Reflect, Psybeam, Role Play, Trick



Who do I need to level up, and what moves should I change?

Ah, I've had this problem before, leveling one pokemon up way too much and the others being majorly under leveled. I completed the elite four with pokemon ranging from levels 47-49, so if you can train all of your other pokemon to this level, you should be able to beat the elite four. Although you do have an Arcanine, I strongly recommend using a Raichu in your team because Lorelei (first member of the elite four) has Ice Type pokemon but almost all of her pokemon also are water type which Raichu would pulverize.