Great set!
I also think the horizon should have been a bit lower, to get more of the buildings against the sky, although #2&3 are taken from the same place, and I suspect so was #1 too, so you were obviously on higher ground. I don't know if you could have got to a lower viewpoint, but I think it might have been better. You certainly would not have had time to move to a different position once you started, the light changes so quickly.
You ought to be pleased with these shots - I would be.
I love the shot of the Ostrich - absolutely spot on