Need help in planning

Hi everyone Need help in planning my trip to Mumbai I have an exam on 13th Feb supposed to be finished by 4 pm. In Byculla. After that I want to visit 1. Siddhivinayak temple 2. Gateway of India 3. Marine drive Next morning I want to leave to nashik as early as possible to visit trimbakeshwar jyotirlinga. Is it possible to do it. If yes then how to plan? Please help me. I am coming from Delhi. Do not want to travel to nashik via taxi coz it is costly....