Not telling my daughter she’s adopted

Hello everyone. My husband and I have been ttc for 4 years now and we got on the adoption waiting list 1 year ago. By a grace of god, we were matched with an expectant mother that is 32+4 weeks pregnant. My husband and I are ecstatic and can’t wait for our little girl but we are having a closed adoption. We do not want the bio mother or father to be apart of her life. We appreciate the bio mother dearly but ultimately she is in a very bad situation (low income, former drug addict, currently living in a women’s shelter), the bio father is unknown and we in no circumstance want our child to be around that lifestyle. It’s a hard decision but we feel its right, we want her to grow up having no doubt that she’s one of us. We don’t want our daughter to try and find her bio parents for her own sake and safety so we do not plan on telling her she’s adopted. Ever. We would not be making this decision unless we felt it was necessary. She is the same ethnicity as us (white) and the inherited traits we will make up if needed and try to explain to the best of our ability. Why do I feel terrible about this? She is my child and I’m only thinking about my little girl’s safety. I just want to make the best decision for her.

UPDATE: Thank you ladies for sharing your opinion. My husband and I will reconsider. To those who are being rude, until you’re in my shoes keep the rude comments to yourself. She is my child not yours.