A long time ago my family wanted me to go to law/professional school. I didn't prepare for LSATS at all, and really went through the applciation process to appease my parents.
I came up with a list of 2-3 schools I thought I could get into. I was rejected by U of Baltimore law school which I thought was a sure thing.
This was the best thing that ever happened to me. I had graduted from undergrad and had no idea what I wanted to do, my grades sucked, I did not even visit the campus of UoB Law.
While my example is extreme, I think it is informative - unless you spend years gunning for the top, you will be PERCEIVED as attempting to skate through, and so employers will be reluctant to hire you.
An alternative, if you don't get into a top 20 school, you could consider, "Reading the Law" which is still done in 5 states. This is a route not often considered - 60 people in the US read the law vs 80k in law school - but it is affordable, so you won't have $150k in debt. You also can change your mind. Further, the person tutoring you is a real lawyer, not a professor, so you are much closer to the marketplace.