Yes, Yale is pretty much out of the question. Harvard *might* be possible with an LSAT closer to 180.
I'm at a top 20 liberal arts college.
I used my essays as an opportunity to expand upon two very positive elements of my resume, and to describe my experiences in detail that I simply could not convey in a resume.
Honestly, I had no clue where I'd be able to apply until I got my LSAT back. My LSAT was a godsend. You really won't know exactly where you can apply until you take the LSAT and get your score back. Good luck on the LSAT!