Baby shower invite list

So I'm putting together my list to give to my sister Inlaw for one of the showers in the city where I currently live. It's got around 60 people, not including my MILs friends and family. My question is: should I invite the four women who are on my dissertation committee? I have no idea if there will be a work shower, so I'm inviting those I work closest with, and I work where I go to school. Also, one of my committee members, for my doctorate, works at a different institution. Three of the women I consider myself to be pretty close with - two of them found out I was pregnant before my family did because I defended my proposal while I had morning sickness so bad ha! I just wanted to get your thoughts :) thanks!