Although people say that "you might as well apply!" I really don't want to go through the whole process of blanketing every top-14 school if it's only going to stress me out.
Honestly? If simply applying to law school is going to "stress you out" too much, then perhaps attending it really isn't a good idea. Everything about law school, especially the grading system, is competitive.
I'm taking the June LSAT with a predicted score ~170 (I've taken three full-length test-prep-company diagnostic tests with my scores being 170, 175, and 176, so who knows how it's actually gonna turn out).
As TopCat said, MANY people score a heckuva lot less on the real test than the practice one. This "I-scored-170-on-the-practice-test-but-scored-150-something-on-the-real-one" tale is one of the most common posts on this site. The most common cause, in my opinion, is people not properly timing themselves during the practice tests.
At the risk of sounding snarky, I'm curious why you think you couldn't get into some really good law schools with a possible 99% LSAT and a 3.5+ GPA? Surely you'd get into at least one top 20 school, probably several, and this information is readily available. I would be more concerned about understanding why you really want to attend law school; it's definitely not something that should be done "on a whim."