From your post, it seems like there is a calling for the entire family to “swim the Tiber.” My advice is to pray, to continue to attend Mass as you say you do, and listen to your heart. You might have a Sunday family dinner and gently bring up the subject with your husband and your children. Possibly one of you could attend RCIA (the formation program for those considering entering the Catholic Church as adults) and share the experience with your family.
You might want to talk with a local Catholic priest (possibly the pastor at the CC you are attending) and discuss your feeling with him.
The one thing though I offer is not to put a time frame on your decisions individually and as a family. Listen to what is in your heart, be patient, and ask the Lord for direction. Becoming Catholic isn’t a snap decision, and the process of conversion isn’t a simple one time thing. RCIA takes (usually) several months of reflection, study, and discernment. And with RCIA, if at the end you don’t feel comfortable, you don’t have to follow through and convert. We (all us Roman Catholics) aren’t in the recruitment business, and there are no quotas for new members.
Peace, and a prayer said for your intentions.