Upload & Sell: Off
Why don't you just use AF-ON? I assigned AE/AF-L to top item of "My Menu", which is LCD virtual horizon, then a push on joystick can bring up the full "my menu",where I have long exposure NR on/off, sensor cleaning, etc, etc. (I only use manual for my landscapes, so no use of AE/AF-L).
Of course, my AF Activation is AF-ON only, have been using this since my first slr.