Baby Shower Invitation Question

Just needing a bit of advice on etiquette here. I was a teacher and I quit at the end of last school year to stay home after I have the baby. I was thinking of inviting some of my co-workers to my baby shower. I haven't really talked to them much since June, but was wondering if it would be too weird/greedy to invite them to my shower? I sent a group text the other day to just check in with them. I was thinking about sending another text to see if anyone was interested in attending and for them to send me their addresses. I like these ladies, I just didn't want it to seem like I just want gifts from them.

Any [nice] advice is appreciated. :)