I have D5000 which is somewhat similar and i always use center point focus and recompose, it gives more control over the image. I also have the AE-F/L lock button on the back set to auto-focus only and the shutter release for exposure lock only (and shutter release obviously). This way i can separate the focus from the exposure, it also makes using center point focus easier (and probably the rest) as you can compose and meter separately .