The short answer is: you should be on the safe side with those values.
The Doepfer PSU3s are pretty good and you should be able to run them close to their specified limits. The problem is, that you can't rely 100% on the power consumption specs of your modules here on modulargrid. Most should be close to their actual power consumption. But there's no way to tell how these values were measured, really. Some modules show a significant spike in consumption on power up, most will draw varying amounts of power depending on how they're being used. Has the manufacturer (or user) who added the module here entered the peak value or some average? Or just some random best guess? You can't know for sure without doing your own measurements. So the recommendation of not exceeding a maximum of 80% of the PSU spec also serves as a cushion against too optimistic module consumption specs. Again, it's a recommendation and no hard and fast rule.