I love the colours of #1, but I feel a bit like Rae. The tunics are bringing up nasty memories. Also, I think you can buy stuff that looks very similar when you are there and probably in some lovely fabrics! I mean, supposing you get any time to shop.
I know this is a killer trip to plan for. And as you know, I have lots of sympathy for trip-planning. It is SO HARD!!
In the end, it matters most that you are comfortable and prepared for the elements and what you are doing. Whether you'd wear it on the streets of your home city is not important. To a point.
But only a point. I think for each of us, that point will differ.
Some thoughts - what about skirts? The non-pencil kind. Do you wear/have any or would those be super impractical for what you will be doing?
What about slim (gasp!) ANKLE pants? Or clams? To wear with a top like in #3. Or rolled lightweight denim?
What about a simple straight dress in a lightweight jersey type fabric that won't wrinkle and can wash easily in the sink? If it is sleeveless and you will need covered arms you could add a little shrug or shawl. Though I know that would be a hassle to carry around.
Maybe all this advice is total bunk!! Maybe we should know more of what you'll be doing when there. I think I was the one who originally counselled to check into customs and what is considered respectful. So I do understand the need to cover up. On the other hand, will that be for the whole trip?