Should I take a drop for DU CIC B.Tech, I have got B.Com. Hons. at SVC DU. I am from Comm stream so CIC is the only option. I'm very interested in computer science.

This entirely depends on your preference. If you are interested in Computer Science then your goal should not only be CIC. 

You can get into IIT, NIT, BITS, etc. which are also excellent in terms of CS. So, make your goal clear, as college is not the factor. Do not take a drop for just a college, take it only for CS, and no matter the institute, work hard to succeed in it.

If your interest lies in CIC then you should continue it. But keep in mind that you are from a commerce background, so it will not be easy for you to compete with other students of science background.

SVC is one of the best colleges of DU and your course is the most popular among students, so if you think to pursue your career further in commerce, SVC is really a good option.