First off, 153 minutes is too much for a single layer DVD…the bitrate would be about 2 mbps. The quality would be crap. Suggest a 2 disc set.
If you have multiple sequences in Premiere, you will need to export each as elementary streams (.m2v and .wav) from Premiere, then import each into Encore, where each would have its own timeline.
Encore’s Help file can be read like a book if you choose “Contents”