The source workout Wright Peak is indeed at 90-92%. The minus versions that are included as a part of SSBHV1 and 2 appear to be designed to help you get used to the longer intervals at a lower power before progressing you to higher power in the latter parts of the plans. Workload is cumulative, so while you may be able to handle the workload now, it may impact your ability to handle the workouts later in the plan.
There also isn’t a hard boundary between zones, so I wouldn’t sweat it in this instance.