Last name..

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I had my daughter at 17. She has a hyphenated last name between me and her dad, who is my ex.
My son is going to be born in June and he will take my boyfriends last name. But I'm starting to think, maybe he should have mine? Or at least hyphenated like my daughter? 
What do you think? 
It would be weird, Larson-Lambiase if it's hyphenated. But his first and middle name sound weird together with my last name. His name is Forrest Ronan Lambiase. It only sounds "good" with my boyfriends. I don't know. What would you do?