I am on a H4 visa and I got admission in a good university for Fall 2014. I got the option to join as an in-state student which is way cheaper than studying on F1. Hence I chose this option. But I eventually want to go to F1 visa so that i can utilize the OPT option. 1. When would be the best time to apply for change in status considering OPT is a top priority. 2. How long should I be on F1 to get OPT. 3. If I change from H4 to F1 midway through the Masters, would I still need to take 9 credits per semester to maintain F1 status? Please suggest.