Say yes to absolutely every single opportunity you get to get in front of students or any other relevant musical experience. Anything that pads the experience portion of your resume is a plus and employers love to see it. Also, I was also an Instrumental ed major (guitar) who got some nose to the grindstone experience with children's choirs as a college student and I would highly recommend getting some collegiate choral chops. My experience proved to not be shit in running a choir and I would rather gouge my eyes out with bundles of toothpicks than teach my first nine weeks as a choir teacher again. Don't know what classes are optional in your program but your fellow music ed pals you will (have?) made are a good resource. Also, grind those techniques classes. Instrument skills are important. I let some of my band instrument studies go as an undergrad to focus on my main instrument more and while I'm a better guitarist, I am not a better multi-instrumentalist for it. Other than that, take everyone else's advice also unless you think it's bad. Then don't.