David, I'm sorry you are going through this. I am scheduled at the House clinic for 12 May. I consulted with scores of doctors/interns/fellows and although I had already scheduled the surgery at House before speaking to Dr. Schwartz, I will tell you that, hands down, he was the nicest, calmest and easiest to talk to doctor that I had spoke to since I was diagnosed. I felt the best when talking to him and I have near calm in my soul about this whole thing for the first time since diagnosis.
Also, I wanted to add that you mention that USC has a person you can talk to right away, but you didn't mention that is an option at House, too. So I wasn't sure if you knew they too have that at House - here is the page: https://www.houseclinic.com/consultation/acousticneuroma
The number is (213) 483-9930 and a wonderful and kind person will talk to you - I think it's rotated by the various surgical team's admin staff, so depending on what day you call, you will get a different POC from a different team. I also found this incredibly nice/kind to talk to an understanding person. I wasn't interested in USC, (I have a closer option at a university hospital in IA, that I had a consultation with) so I didn't call USC, so I can't compare my experience to USC's support staff.
Good luck in your decision, I will say that I feel a lot better emotionally than when I was first diagnosed, so I hope time will also make you feel better about the diagnosis - it sure is a shock when you first get it.