Even AutoGK will not give you a perfect 1CD movie that are 120 minutes long. There is a reason why any good scene group will go towards a 2CD rip way before 120 minutes.

AutoGK is your best bet though if used, but I am telling you that you will max get aXXo quality.

You will get better quality using x264, but if you want to play them on a standalone DVD player then that isn't possible. Why the obsession with 1CD?