Left of the center of the lane, leaving enough room for motorists to pass me on the right... as for as the stop line, I stop where I can trigger the sensor... if properly placed, that should be behind the stop line.

I would stop in the same spot if I were riding a motorcycle.

Now the real question is, will the motorists stop behind me, to the right of me, or really freak out and go across the double yellow (in spite of the red light) all the way around me, and then move to the right of the road in some strange awkward attempt to avoid being "behind" a cyclist?