If you are going to grad school, you will find more open minds there----and, being a peer can be a great advantage at times, there are times it is a challenge but that is true in any human service field. I would do what appeals to you, and get the experiences you find valuable. Also, depending on your grad track, you can be your own employer/choose a place that believes in peer work. (I worked in the mental health field for a long time, loved it, and found times that my own experience was not only valuable, but valued.) In "those days" I only disclosed my own hx (or experiences) when I felt it was appropriate and would help someone. I began to talk more with my professional colleagues, and, you bet, lots of us were drawn, knowingly or not, to the field by our own problems. I do not think you would want to work for any agency/system that maintains an "us/them" stance.
Hey, whatever you decide, best of luck and get all you can out of it for yourself and others.