That's more than enough. I actually transfered a few pokémon and managed to make a big dent towards completing the dex. Still have a few more pokémon I need, though. Not sure I needed any Sun stones, though.
If you think you'll be able to help me with the dex, have a look at my thread. It's just been bumped. And I managed to get one of the pokémon in the list (Umbreon) as I wrote this.