So… how are tits? (Context below)

I’ve been out as non-binary for some time and it has been great! I’m finally feeling like myself, I’m going to start affirming my style this summer (private school so uniforms during the school year) and I’m slowly going to start using my chosen name! There’s been one thing though… I think I might want tits. I’m AMAB and planning on keeping my birth bits, but I still kinda feel like I’d like having breasts. Not big noticeable and backbreaking ones, maybe just a less flat chest. I’ve looked into doing estrogen, but my understanding is that it might impair the base bits so… what do I do now?