Based on your background, I think you should have 40% chance to score a 180 and 40% to score a178, so 176 is kind of unperformed. Also, in case you cannot get a full scholarship, you still can get a job first and save some money before go to law school.

My son has very similar background as yours, he graduated from a top institution last year and working full time as an software engineer. He's able to save $100,000 a year and will able to go law school next year even without any scholarship.

His GPA just under 3.7 but with 5 weeks preparation (1-2 hours a day at most), he able to score 178 (score received today). With your amazing GPA and similar background, you really ability to score 180 should be a little higher than 50%.

During the summer you should have more time to study. However, I would suggest you to think a little more about your options before you really take Aug test. The key might be: do you able to remove family's pressures from your mind and can 100% concentrate on the test day ? If in your mind, you still too care about what your mom's options and cannot focus on your goal (i.e.180), then maybe you should think twice.