The pace I'm planning on sustaining (at least for the initial period) is roughly 1 class per week. I'm trying to go faster initially so I can do 2-3 weeks on later courses where I plan to do more project work.

You're absolutely right that cutting out the busywork makes my approach a lot easier than trying to do this in actual MIT classes. But that's one of the possible benefits of doing this streamlined approach to learning rather than in an institution, one of the tradeoffs I hope to discuss as the challenge progresses.