Okay, so update on the situation. After about 6-7 days of following the plan, it was still way too easy. The hard days were easier than my daily rides that I do 4 times a week, from past 3 years. I feel the plan builder questionnaire doesn’t take into consideration your existing fitness and training level. For example, I’ve been doing three hour long zone 2 rides twice a week for last 5 months. Still the plan suggests a very very easy, very short endurance ride.
So, what I did was end the plan and create a new one, answering the plan builder questions a bit differently, as follows-
Training Load - true data 7-9 hours
Volume - mid volume, as get very bored in long indoor sessions.
Experience - This was a bit tricky, because the wording here is “What is your level of experience with interval training”, and I following a training plan for the first time, I previously selected Beginner, but this I selected Advanced, interpreting the question as what is your level of experience with high power surge sprints, climbs, attacks and hard rides in general
Start data - as normal
Event - this was also tricky as previously selected I’m Not Training For an Event, but also added a personal goal event of a 1 hour 40 min long TT course. I also selected a lower level of intensity for this, which I think was my mistake because I’m aiming to do this at a flat out pace. Its a local course which I just wanna get good at. So this time I added the same TT course as an “A Race” and selected the correct intended intensity - All Out!
Schedule - For both old and new plans I selected to make it a Masters Plan so I get time to do strength training a bit of running as well in the weeks.
And thats it!
TL;DR - interpret What is your level of experience with interval training as what is your level of experience with high power surge sprints, climbs, attacks and hard rides in general and always add an A race event and select the right intensity.
So far the plan has been very good - not toooo hard, not boringly slow. The slow days are slow enough to bore me, but in a good way.