hey girl this is what I would do, hopefully it helps you with getting those first words down on the page (since that is the hardest part)
- I would leave the "yourself" bit either interweaved throughout the other sections, or as a tiny extra-curriculars bit at the end
- I'd start with why am I interested in commercial law very briefly and link it into the reasons I'm applying to this firm + location
- Then I would potentially link the "why me" and "why do these things about the firm resonate with you" together - as you can easily state something about the firm, e.g. culture and then link it back to why you (I work best in this culture as demonstrated through working as Y at Z ...blah blah which would make me a strong addition to the firm) or something like that.
- The main goal (since there isn't too much word count for you to play with) is to make the reader feel like you've covered all the points asked in one way or another. I think splitting the word count and addressing each topic individually would leave you struggling to add detail to your answer.
hope that helps? that's just how I would approach it! other people may have different approaches - find what works best for you and your writing style!