Kent isn't someone who does this for no reason.
He saw the task ahead of him and knew there was just no way he could handle it. In fact, he saw that, to be able to face them, he must cheat, and that cheating may come from three things: the Ruthless Bandit's memories, Spirit Painting, and Chaos Qi.
He needs Lex's memories to be able to think of all the dubious ways to kill. He is going against demigods, so aside from his strength, he needs every evil idea he can come up with.
Thanks to Kevin Sage, his thinking abilities are on another level. However, that doesn't mean he is evil mentally. That mentality would come from the Ruthless Bandit. So he would have to read the memory diary and know what happens next.
Then there is the Spirit Painting. He knew that to win, he needed help far beyond what he could provide right now. Inasmuch as he is now an absolute being, he alone cannot win, not even with the 3,500 Immortal Lords he knew would be his to command.
