Thanks very much for the info!
We plan on a slow acclimatization to make for best chance of success, but reading all the posts always leaves me with a nagging worry that this time we'll get hit.
When we did Elbert (14,400) we had 3-4 days above 8K including most of a day at 12K on the Rocky Mtn NP drive and sleeping at 9K. But, as I said, the first day of that was a drive up Pike's - but no effort there.
I ask about the iron because I'm typically low, and I take supplements and was curious if forgetting to take them might make things worse.
So thanks for the info!