<p>ENG 1/2/3 seems like really useful courses, and probably no real workload. Perhaps you can get permission to add it even beyond the unit limit? On the other hand, that means that you would have 19 units of other courses, which is usually considered an above-normal workload (especially if the courses involve labs, term projects, or computer programming). If you do take that many other courses, be prepared to drop one before the drop deadline if the workload is too high.</p>
<p>If CSE 91 is at the head of an important prerequisite sequence for your major, you may want to keep it and drop one of your other courses if the total units or workload is too high.</p>