Pete96,
My advice goes in a different direction from Anita’s. I am 43 and finished a Masters this year. Here is my take on things given my own personal experience: Go for your Masters.
My reasons:
24 is still very young. I consider a person’s 20s their adult-youth stage of life. I did not feel that way when I was in my 20s. I felt like I was getting old. It is a great time to knock out advanced degrees. You likely will not regret doing so in the future and the logistics get more complicated if you have a career and family down the road and then decide to pursue more schooling.
I assume that a Masters from a top school will open more doors if you decide to make non profit work your career. You can stay engaged over the next couple of years by volunteering for your current organization.
Good Luck!