<p>Hi,
My classes are also similar to yours.
Physics 9A, Math 22A, and Engineering 6
People have recommended me to not take more than 13 unites for the first quarter.
I'd suggest the same for you.</p>
<p>Just take 13 units, you'll need plenty of time to study and settle into the quarter system as well as getting to meet plenty of new people (which means procrastination...)</p>
<p>And if you feel that you still had plenty of time to do non-school activities..then go ahead and do 16 units or so your next quarter. </p>
<p>*Note: Winter quarter registration begins midway through fall quarter, so ALWAYS be thinking about what classes you need and want to take..</p>