How low is too low for a GPA?
With all that said, I am having such anxiety over my GPA. Should I?
While we're at it, should I focus on my work experience and future plans in my PS, or use it to explain why I had 2 horrible semesters in UG?
Your gpa is not too low to get into great schools if you score around your current practice range.
Do not have anxiety over your GPA, there is nothing you can do to change it now. No use crying over spilt milk. You will have to come to the realization that some schools will be out of your grasp because of it but it is not the end of the world. There are plenty of top schools which will be forgiving of your gpa in light of your lsat and work experience.
My advice from one splitter to another would be apply to a lot of places, use your application to highlight your positives not negatives, and going the extra mile when applying [why x essays, visits, interviews, etc...] could really help you overcome your gpa.