After arriving in the US, one thing you probably have to do is find an apartment. For the first couple of weeks after your arrival you will probably stay at a hotel or in an apartment from your employer; either way, you will need to find a place to stay and feel home at — the earlier the better.
I had a very nice place to stay when I arrived, and still, because I knew it was temporary I didn’t really feel at home. So finding an apartment was one of my top priorities.