Grades are important, but they are only one piece of the puzzle. Do you have strong rigor (lots of AP?) Do you have a part time job? Sports? Music/theater? Extra curriculars? Do you have passions and interests to share? Volunteering etc. Have you looked at the common app essay prompts…does anything jump out at you that you feel strongly about sharing? Do you have close relationships with teachers you will ask for a LOR?
Yes, focus on a strong finish this year the best you can but you will get into great schools.
I would also recommend you find a financial and admittance safety that you would be content with to ease the stress and worry of those T30 applications.
Can you share more about what you are looking for if you are indeed open to recommendations?