My take on it, is that Anakin wasn't one his mind till after the end of TPM.
He was trying to find ways to overwhelm the Jedi, Invasion of Naboo making it legal. Which this is what i think how he originally intended to be the beginning of the end for the Jedi.
Once Anakin showed up and saw his potential, whether he's heard of the "Prophecy" or not, he knew he'd be a powerful tool for him. I don't think he had a specific plan to turn him. I do think it was his goal.