I think in the book there may be some examples.
If your running it with specifically the goal of powerlifting I would do it something like this.
Close grip or incline press (more specific to the bench press than overheads)
Seated db presses
Tricep work and some biceps if you really want.
Rows (different variation)
Good mornings or hyper extensions (light)
As a beginner to powerlifting your priorities are to gains a solid base of strength and understanding of technique in the main lifts. Also to develop muscular size, which is why assistance lifts should be added.