Hi Yublocka,
First, I have to say you look Amazing in that ruffled top, it really makes me wish I had bought one!!
For the jackets. I would cull the mint-colored one, I think it buttons up too high.
I actually really like the black one, I could see that possibly going over a dressy dress on the rare occasion when one needs a cover up. It also sounds like the quality is really nice and it looks good.
For the darker brown/olive one, I am torn on that. Have you tried rolling up the sleeves rather than scrunching them? Also, have you tried belting it?
If you try those things and it still doesn't work, I say get rid of if. If it has been four years, you probably wont' wear it so why move it?
I hope this helps!