Wowskiies

Hey guys, I'm up to the 8th gym in Hoenn but was told to go and look for Jackson at Sky Pillar, however when I went to Sky Pillar there is a guy outside by the door that won't let me in. It says: Great trials shall await you after this spot. You are not prepared. I have 5 pokemon on my team, 4 are over level 90 one is level 55. I tried removing the level 55 and I still was not allowed in. Do I need a team of 6 over a particular level?

Edit: Solved.