I agree that I love the coat and yellow/navy sweater. I think the red/white is not as striking on you - I like it, but if you are struggling to style it I would leave it.
I would wear it with blue denim and white sneakers (shorts or jeans) or maybe with white wide legged pants (which I don't own) or maybe a navy or white skirt (if the proportions are right).
The navy/yellow is a little more unusual, a great match with the coat, and will work so well with dark denim or mid tone denim.