You should go play in Colorado. I was playing with some Colorado guys here in SF and they were all hitting 220 and saying stuff like "I don't get it, I just have nothing off the tee today." Sea level, bros. Sea level. I am certainly guilty of this mistake in reverse, when I play in Tahoe it always takes me half the round to figure out I need to take a club less.
edit: PTD, that Octane is a good club, maybe not as forgiving as some. Not trying to pump Taylor Made's tires but that Burner (2009 and on) is great for the money, you can get used/demos for very cheap, like $60-75.
I also play a 10.5 degree.