<p>Taxi1113- yes, your 48 units as a sophomore will benefit you for your registration time. A sophomore with no extra units would have 32 units. But, of course, most USC students are high-achievers and will have extra units so don’t get too excited! New freshman can start with a maximum of 32 units.</p>
<p>I don’t think you will have to worry about a tie-breaker because luckily computers can handle more than one registering at a time. 
When it comes time to register, you will receive information by email and you will be given the time that you will be able to log-in to register. For new freshman, this will start second semester because first semester registration will take place during orientation. Since you are a spring admit, I don’t know if this will apply to your first semester or your second semester.</p>