Hello Madhu !

I would rather call it a wise choice if you wanted to get into Annauniversity affliated colleges. Because there isn't much of a difference between SSN and SVCE.

In all aspects such as placements, exposure, teaching and even with respect to distance, both the colleges more or less score the same. Apart from the beautiful campus at SSN, both the colleges don't differ so much.

Looking at your question, give your first priority to  SSN. Give it your best shot. If you get through it, it's great. If not, SVCE is an unregretful decision.

All the best :)