FTP tests are just tools to set the intensity of your workouts appropriately. Really the most important thing your are trying to accomplish is accurate estimation of LT2 &/or MLSS.
So, you know you. If you can complete threshold workouts at the bigger number & it feels like a threshold workout should…then that’s the number. If it feels like it’s too much…then that’s not the number: it’s too high. If threshold workouts feel like sweet spot workouts…then that’s not the number: it’s too low.