What are my chances of getting into UMass Amherst?

<p>I got a 650 on my critical reading, a 590 on writing, and a 560 on math. That's 1800 overall, or a 1210 on the old SAT scale.
I am the editor of the school newspaper, but most of my volunteer work only lasted for a year or so. I have a lot of short-term ones, and no long-term ones.
I don't have a job, but I babysat a lot for my little brother.
I have a 3.39 weighted GPA.
I've taken honors English and honors Spanish since sophomore year.
So, what are my chances?</p>