Will my empoleon do well in the elite 4 in diamond?

thats a good mix of moves but i wouldn't suggest empoleon for guaranteed success. i would of picked turtwig or chimchar since they can learn great moves even though they have a lot of weaknesses. Empoleon is a good tough pokemon but with poor, weak moves. I would bring a strong team of 1 ghost, 1 rock, 1 fire ( I brought rapidash with flash fire so elite flint wont be able to hit me with fire attacks), your empoleon, a strong ground type, and your dialga/palkia. im just saying that Empoleons have a disadvantage when fighting, but with some good moves like yours, it would be a good pokemon (i would get rid of the avalanche)