The sleeves are bracelet length. Are you okay with that? And assume you would not be taking (dirty) public transportation if you are considering a light colored coat like that.
Congratulations on your weight loss. I'm not a coat person; in my climate I wear jackets or a lined trench. If I were to buy a coat, I most definitely would not buy black. Boring and depressing and not such a good color at my age. Maybe navy if it is a wonderful navy. But I think colors can be wonderful like Transcona Shannon's burgundy one. To me, burgundy can be a neutral. I must say my red trench was a bit much when I wore them with my bright red jeans, lol.