My best advice is to use your best judgement on what your needs are. You can make these strength routines easier and harder in various ways. As a strength coach, I like to see people generally challenging their muscle load/strength more than the speed or number of repetitions which would put more stress on the cardiovascular system. As cyclists/endurance athletes, we generally get enough cardio training via riding, running, swimming, etc. But not enough muscle load. So bottom line- challenge yourself however you see appropriate, but if possible, err more to the muscle load aspect.
Yes, you will see more plyometric exercises in the strength program in the near future. Explosive activities very beneficial, but must be done with caution and only after developing a good strength base, which is why they were not included in the original strength program.
@FredrikG,
If you want more specific advice on training, please consider a Customized plan so you can talk to a coach and have your plan tailed to your individual needs. It is fine to complete the “pre-season” or Strength based gravel plan, followed by the gravel plan that ends with an event. It would appear that they’re the same plan and one just has strength added, but it is actually more complex than that. Adding strength requires a completely different cycling plan so pairing these two plans back to back is actually an optimal way to train.