I have two deaf daughters, both have cochlear implants and I’m very happy with the decision. My wife and I both learned sign, and let our kids wear or not wear their cochlear’s as they see fit. The youngest is too young to really understand but the oldest understands and almost exclusively selects to wear them. She is in main stream school but does spend time with her dhh friends. She 100% prefers to be with other dhh folks and sign, but likes being able to hear.
All in all the decision is yours to make and people can weigh in or tell you what to do. We got a lot of hate from Deaf community members for going down the road of implants, but we also got a lot of support. There are hatful people in all walks of life. Do what you think is best and love your kids.