What you should be doing is to focus on your job.
It's good to think ahead, but you're getting ahead of yourself. You shouldn't be targeting any schools because it's years away. A lot can happen between now and then in your career/life, and you have to allow for such changes or new discoveries to happen. Avoid the "lock and load" mentality to career planning especially when you're barely out of school.
What you should be doing is to focus on what you can do in the next 6-12 months. Make sure you're learning as much as you can at work by taking on projects that really challenge you as well as taking initiative whenever you can. Align yourself with mentors at work that you admire or respect - the advice and guidance they give you can be invaluable for your future. If you have time outside of work, make sure you're keeping yourself busy and productive on something that involves people - some organized group activity or activities (artistic, athletic, charity, political, religious, etc.) that you love -- that way, you have the heart to commit a good chunk of your time over the next years or decade.
Do that, and your b-school plans will be a byproduct - you will know when it comes time to apply whether it's worth it for you to go or not, and the kinds of schools that will best suit your life and your needs at that particular point in time.
In other words, rather than figure out "what kind of resume do I need to build over the next 3-4 years" -- you should be focusing on "what kind of life do I want". Fit b-school into your life, not the other way around.
What I say here may very well go over your head (or you may have to learn the hard way through experience and hindsight with the "should've, could've, would've...") but I figured I should give it a shot...
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