Yes I’d aim for 50:50. It’ll be difficult but very useful in your future applications; you’ll learn how to write concisely (not that you don’t already!) and make every single word count.
My tip would be to write it all out first rather than trying to perfect it along the way: let your thoughts flow even if it goes well over the word count. Then continue to delete unnecessary words and rewrite sentences until you’ve got your 200-word masterpiece.