<p>It is great that you plan ahead. However, planning to enter MD/PhD at this point of your life is way premature. Programs are very selective, I would say, that this type of planning should occur after receiving your MCAT score. I know one person in MD/PhD. His MCAT=41 (exceptionally rare). As far as I know in regard to preparing for MCAT, most start preparing few weeks before exam. However, it migh depend on your load. As my own D. was extremely busy in her college Junior year, she started in October for May exam. She said it worked for her perfectly. She also mentioned that having MCAT right after Physics, Physiology and Genetics is helpful. That long period is and exception, most advise to prep. for about 5-6 weeks right before exam, spending few hours on a daily basis.
I believe you are putting too much pressure on yourself and looking way too ahead. Your priority as of now is getting as perfect GPA as possible, getting awesome Medical and other EC’s, develop as a person and definitely enjoy your time at college. You will not have this opportunity later, it will be much more work for you in Med. School, tons and tons. Relax now, go to game, spend time with friends. Remember, you will have to go thru interviews at each stage of your life. they are looking for real people, who had some fun in their lives.</p>