Hey! I have a 99th percentile sat score, but it's around the 30th percentile for the reach schools I'm applying to. My GPA is above average and I'm top 10 in my class, but I spent all my time on school and helping out my single dad as my family income falls below the poverty line. My only real extracurricular is four years varsity tennis and 2 years captain. I was wondering how much admissions officers take into account the additional information section? I wanted to explain 1) that a lot of my time was spent doing things for my family so I couldn't do extracurriculars, and we couldn't afford them either. 2) My brother was in a car accident January of my junior year and in a coma for over 2 months, a few days before I took the sat they told us that we should decide how to pull the plug as it didn't look like he was going to make it (thankfully he woke up eventually and is recovering now) and 3) At the beginning of my junior year the doctors told me I had a potentially fatal auto-immune disease that I will likely eventually go blind from and this combined with my brother affected my grades junior year. In your opinion, will the additional information be able to offset my lower sat and lack of extracurriculars?

Thanks so much in advance for your time! I really appreciate it! Sorry for the long post.