If you are hell bent on doing strategy consulting after your MBA, then maybe you should reconsider applying/joining USC Marshall. I just know 1 person who got through strategy consulting from Marshall (and that includes domestic students, so 1/220; it might be more since I do not know what each and every student is upto). It will not be a smart decision to stick only with strategy consulting - you would need to develop a plan B to realistically explore potential opportunities here.
MBA helps you develop several skills - the fact that you do most of your work in groups (which are not always compatible) was itself a big learning for me. Additionally, once you come here, you will need to introspect which will help you understand what you are truly interested in. Moreover, you will have to network (that is your answer on how you try to get into strategy consulting) to get the roles of your interest. LA is a happening city with several events happening daily - be it networking, conferences or talk shows. Do not expect it to be a smooth ride - there will be many challenges and uncertainties (be it your career, classes, group projects etc). But hey, I would argue that this is the real learning - Marshall MBA truly pulls you away from your comfort zone and puts you in a environment where you need to be proactive, knowledgeable and intellectual to successfully get through it. Taking risks and making compromises is part of life and Marshall prepares you for it well!