It seems like you're border line of choosing the F10, but you would prefer the LCI. The 2014 LCI should come out the summer of '13 if you can wait. I'm sure the 550 with get 445hp and all F10 models will get the LCD Dash/Cluster (like the '13 7s).
The current F10 with mSport is still unique. Go for the BMW, you will not look back. At least I haven't!