Sounds like you’re getting some awesome results with SUF! That’s fantastic. If the workouts feel a bit too easy, remember the the first week(s) of some of our plans are a little bit easier than the rest to provide an ‘on ramp’ into the training. If you still feel like they’re too easy, you could do Half Monty toward the end of your first rest week to adjust your FTP and MAP (and LTHR).