These are all great looks, Astrid, and your summer wardrobe looks to be in good shape. I agree with the others that #1 is really smashing--such a sleek, modern look. I like the idea of semi-tucking in 4, and I wondered if you might just hem the tee, too, to a length like the one in 2.
To me, the gray looks like it will be perfect with just about everything, even though the red was a fun color. It's too bad they didn't last, but good that Amazon stood behind the product.