Congrats on the LSAT score! Great job! As far as I'm concerned, I would never get involved in worrying about this 3rd tier and 4th tier business. Especially when you're talking about a school like Howard University School of law. Just look at the graduates that they produce, and you will have the answer to your question. HBCUs like Morehouse College, Howard, Spelman, etc have been at the front of social engineering since reconstruction, and I wish them all the best. As a graduate of an HBCU, I can't tell you how inspiring it is to attend them; to walk in the same foot steps as Dr. Martin Luther King Jr., Thurgood Marshall, Dr. David Satcher, etc. You have to feel that for yourself and you have to make this decision for yourself as well.
As far as jobs are concerned, big firms heavily recruit at Howard Univ. Just make sure that you do well when you get there and graduate at the top of your class. Hell, that is true anywhere you go. Go to Harvard Law and just graduate....you will have a problem getting a gigg as well.
I think it's all about personal choice. I've just always had a thing about supporting black colleges and univ. That's why I'm HBCU.EDU baby!