"Forums like this would be of much better service if responses were not long chains of irrelevancy."
I could not disagree more. What makes this forum great and what has improved and in some case saved a whole vacation is that local experts can step in and give advice where they see that the poster has a misconception or has not taken into account something that will affect their plan.
Clearly, this is not true in your case. you already have all the answers save for one. Please report back on how your plan works.