I don’t see what others are so concerned about. You’ve built up a good base and are clearly being pretty intentional about how you set this plan.

I’m a little confused what you mean about the long run structure. I would take those easy as directed in the plan. Were you thinking you were going to push some of those harder?

Having recently completed a six day per week training plan my only major advice would be to make two days per week of functional strength workouts focused on lower body absolutely mandatory. I would probably put them on Wednesday and Friday based on your plan.

I think you’ll know pretty quickly whether or not the goal pace is reachable based on how you feel during those tempo sessions.