I would take the Classic Texts and the research colloquium. You have vastly more background than I do, and are much better about studying on your own. I suspect you could pick up the syllabus for Classic Texts, note that you already know a good fraction of it, and do the reading for the rest, and take Transsomatechnics instead. It might be a very busy term ...

Are there going to be unique classes you want to take many/most terms, or is this unusual? If there are always going to be fascinating one-time classes available, taking the frequently-available intro classes first for grounding might be clever. If this is an unusually rich term for interesting classes, leap on them while they're available. (Possible modifying factor: do the professors, or some of them, take the intests of the current students into consideration when planning one-shot classes?)