What are your other 2 courses besides your APs? Also out of curiosity, what AP courses have you taken previously? And of your 6 APs now, are any of them half-year courses or all they all being offered as full year (2 semester) courses?
All AP courses at my school are on an every other day schedule, all year long.
My other two courses are Middle East History (a standard credit, unfortunately my school doesn't offer an Honors) and the other is functionally a study hall, as long as I get placed in what I signed up for. Sophomore year I took Psychology and Human Geography. I had a good teacher for Psych and found the material interesting and ended up with an A and a 5 on the exam. HUGE was a different story, our teacher was completely inexperienced, only a few years older than us, and only taught for that year before leaving. I somehow ended up with an A but felt I hadn't learned anything and decided to opt out of the AP exam. In retrospect, I probably should have just gone for it but I wasn't confident that I could manage a 4. Policy has changed since then and the school now pays for AP exams so all are mandatory. Junior year I took Language and Composition and AP United States History, I don't have my scores back yet but I'm confident for a 5 in Lang and a 4 in APUSH.
As far as clubs, I'm involved in 3 and I'll probably stick with them because I have officer positions and all 3 are service clubs. Meetings are at most once a week and only an hour or so long and I don't see them being too obstructive to studying.
AP courses at my school usually involve daily lectures with notes and quizzes, with occasional group projects. Social studies courses always have reading assignments for homework and so maintaining pace with your teacher is dependent on doing your reading.
It all depends on how you learn and work best - I don't learn a whole lot from busywork, so I basically never did any homework that I wasn't being graded on, and occasionally skipped the graded stuff too if it was for a really small part of your grade compared to tests and larger assignments.
I have definitely taken this approach with some courses in the past, with mixed results. Once I'm familiar with my teachers and the difficulty I'll determine which classes need the most application.
However, I would recommend checking the AP policies of the colleges you plan on applying to. With high enough scores, some AP exams will exempt you from college courses or at the very least give you college credit: if my AP scores this year pan out, I could theoretically enter college with 30 credits and be exempt from several freshmen-year courses. But whether or not you can skip courses depends on the AP and your college major. Come next May (exam time) I would focus much more on getting high scores on the APs that can exempt you from courses because that will save you time and money.
That's a good point, I'll make sure to check into which scores will be most valuable when it's time to study for the exams.
Thanks for the contributions everyone.