That’s cool. I doubt he would have known too much about Anakin Skywlker as a Jedi Knight since that would imply he knew about the Kenobi who trained him, but Luke could very well have heard of Skywalker the legendary pilot, especially in connection with Tatooine. I’m imagining a scene where Obi-wan tells him his real name and Luke makes the connection, maybe even saying that he modeled his flying after people like Anakin. That would give him much more reason to devote his purpose in life to this previously unknown man.