Hi Thirteen! For starters, I will say don’t worry too much about your quant score. I don’t know too much about the other schools, but I know MSFS is the top of the top and they don’t really pay it much mind. The reason their average score is high is because most people who do well on verbal also do well on quant. If I were you, I would be more concerned about the GPA. That being said, your peace corps time will count for you much more than your GPA should count against you, so while you aren’t a shoe-in, I don’t think it’s out of reach. Your internship experience also makes you a strong candidate. For your SOP, make sure to make it personal. For mine, I started with a short (1 paragraph) story about my first act of civic engagement, which was a letter to the president when I was seven. Then go on to discuss your interests since then and why that school in particular can help you get where you’re going, but always add a personal touch. They’re not looking for something academic. That’s the purspose of the transcript. Think of it more like a personal narrative.
On the issue of language, it’s not a big deal at all. They want to see that you have some language background and that, with another two years of study, you could be at a high intermediate level. MSFS even covers foreign language tuition, so it’s free. The exam is oral to be taken during the two year program (as early as after the first semester or as late as just before graduation). For most departments you just read an article in the chosen language, give a 5-10 minute debrief to faculty on what it’s about, and then they ask you a few questions about it. For admissions, they just want to see that you have some kind of background in foreign language and could have a basic relevant conversation after two years of study. Which language or how many languages don't matter.
Hope that’s helpful!!