Wow, you had almost every option up there but the one I took to learn piano (I just started guitar :-P) I took lessons to get me over the "beginners hump" then took off on my own. I'm now playing Variations on the Kannon as done by George Winston and (If you ever saw "The Majestic" by Jim Carrey, this next one you should know) Boogie Woogie Stomp by the great Albert Ammons. All the original works, not some watered down easy versions. Think of a teacher as a booster seat. Use it until you’re big enough to sit at the table with the big boys.