You can definitely study for the MCAT while doing other things. I was working full time and taking part-time classes while studying for it. You just have to put in the total time necessary. I studied 700 hours over 9 months and ended up with a 516. If you can get over the 90th percentile that would be awesome in your shoes (514). If you can shoot for around the median at the schools you are applying to that would be good, but some schools care more about mission, and being female and URM can definitely help you meet the goals of many schools.