Hey JL, check out this link.
Andras Schiff lectures on the Beethoven Sonatas. The lecture about opus 109 is at the top. But don't just listen to that one. If you can find the time, (and I can't think of a better use of a pianist's time!) these talks will open your mind to unseen vistas; personally, my whole concept of the sonatas was altered for the better; I hope yours is too!
About the 109, it's technically difficult and pretty long, IMO, so if you want to play it well, don't procrastinate! Listen to as many recordings as you can get your hands on.
Go for it!


