Which of these two baby names do you like? Advise?

David, or Luke. the last name will be Holmes or Campbell-Holmes. middle name might be Matthew but im not sure yet. This is my first baby, and i am Bisexual. Also does anyone have any advise on how to make sure my kid is accepting of homosexuals. i do not want my kid to be ignorant about it. How would i talk to my kid about it?