Full-time work really is that important. For an MBA program, unlike frankly any other graduate program, this is typically the most important piece of your candidacy. Please go get a full-time job.
If you needed an MSA to get an entry-level accounting job I would be more understanding, but you simply don't. Not only do entry level jobs in the field not require higher degrees, but neither do most higher level posts.The only person I know from my old accounting group who has an MSA got it after years in the industry as a way to build upon experience and sharpen her skills. The key is that she wanted to further build her career in accounting, which she really enjoys.
Whether or not you decide to apply to an MBA program in a few years, your work experience will help chart your path for what you want to do with your life.
I almost applied to law school my senior year, largely because I didn't know what else I wanted to do and because I thought it would be a good professional stepping stone. In hindsight, I'm so glad I saved my time and money and went straight into the workforce. It sounds like you might be in a similar mental place. While graduate education is great, please don't go without a plan in place that connects to your interests. As others have said, full-time work experience will make you a much more attractive candidate for a top MBA program than will an MSA. But regardless of that, it's not a wise idea to get a graduate degree in something you already know isn't your passion. You'll likely come to regret it.
Posted from my mobile device