I honestly thought about cutting all the white space completely, but then after having a chat with our designer... He said that every page is visually divided into blocks (even if there are no explicit visual borders of these blocks), subjectively, of course. This, the "F-pattern" and "left-to-right" orientation for the most of us brought us to an agreement that the last screen was ok... The subjective "blocks" are somewhat like this.

But I agree, I shouldve been more precise