I have a 3-3-3-3 bars set, for 7,5% condition I use. It's pretty effective although every once in a while I suggest you change to a new drill depending on what skills your team may be lacking in general (In my case everyone's bravery is low, thats why I have to use a "bravery focused" drill even though its not cost effective at all.
My set goes like this
1. Warm Up (Blue)
2. Piggy in the middle (Green)
3. Use your head (Green)
4. Pass, go, shoot (Red)
5. Skill Drill (Red)
6. "Stretching" (Blue)