Hi, @alexfthenakis !
I’d recommend Low Volume, with your Plan Builder workouts being on Tuesday, Thursday, and Saturday. When choosing Low Volume, all three of those workouts will be ‘key’ to your progression as you move through the plan towards your goals.
In addition to that, including TrainNow endurance workouts for your Wed + Sunday when you’re available is a great strategy!
You’ll be sure which workouts are your ‘key’ workouts because as they are changed via Alternates, they’ll still have similar structure and meet the same system requirements and goals as the original workout; a stark contrast to your added endurance TrainNow workouts.
On the days you decide to go unstructured-outside instead of completing the Saturday workout, we’ll automatically import the ride (as long as you have Ride Sync enabled) and Adaptive Training will adjust your future rides to keep you locked as a result of that structured workout that was missed. In the future, Workout Levels V2 will give you credit for those unstructured outside rides the way it does for TR workouts. That feature is on the way!
The level of specificity you’re looking for in the customization of individual days through the Plan Builder process (not retroactively, after your plan is built) is on the roadmap, but with no ETA while the team focuses on higher priority releases.
In the meantime, Adaptive Training is going to account for those added TrainNow workouts outside of Low Volume super effectively, and make adjustments as those are added and completed when merited. 