Name Help Please!!

So my husband and I are having a boy!! Very exciting! We have a 4 year old daughter named Morgan and shes my world! We are stuck with little mans name. I like the name

Mason LaDell D. BUT mason is so popular. So an alternative is LaDell Scott D JR. I am not a fan of how popular the name is but i love the name, and i love my husbands name BECAUSE its not popular but sometimes i think he should have his own name. When it comes to the name Mason, people tell me “well who cares if it’s popular, all that matters is you like it?!” Idk why it bothers me, but it does. I like them both so which should I pick??