To minimize the torque on the EBB you want to have the line connecting the BB and the EBB axes to be as horizontal as possible. The position is determined by the length of the chain so you may have to use a half-link (ironic) to get to the ideal position. The ideal position for the BB, when looking from the drive side, is at 3 o'clock or 9 o'clock. At those points the torque on the EBB is zero regardless of the crank force. So stomp away.