I think your two questions are right on target for what we need in determining our future. Sharmy and I are 100% with you on our own kids' goals, and I agree with many of your points on high school pathways -- specifically, that IB may be a good path for at least one of our kids, while special ed teaching and learning of Mandarin are likely not going to be part of their plan. The Early College Academy has possible potential for our kids, while your fifth option is what we've long had in mind.
I feel that NOW is the time to bring other parents into the conversation.
Here's another thought -- I agree with you 100% on everything you say because you are great.