1mm toe-in is correct, remember it's a combined value, ie 1/2mm each side. That said, tracking dead ahead is fine. You will find it tracks the camber of the road a little more, but i prefer it for the improved drive.
A full turn of the track rod gives you about 2mm toe adjustment ISH, but i'd seriously recommend measuring it properly. Also worth remembering the measurement will change slightly as you tighten the lock-nut, so measure again once you've finished and adjust a little if required. I think Cully has done a guide on the "bits of string" method, which is perfectly accurate if done carefully.
A full turn of the track rod gives you about 2mm toe adjustment ISH, but i'd seriously recommend measuring it properly. Also worth remembering the measurement will change slightly as you tighten the lock-nut, so measure again once you've finished and adjust a little if required. I think Cully has done a guide on the "bits of string" method, which is perfectly accurate if done carefully.