Need opinions ASAP!

So my husband and I are due in four days and have pretty much had a name we are set on for our son for awhile now. But now I am beginning to have second thoughts and need some outside opinions. We haven't told any family members what the name will be, we are keeping it secret. We would be naming our son after my grandpa, and it's also a name I've always loved. The only thing is, I have a cousin who is named after my grandpa already. So my grandpa would have one grandson and one great grandson named after him with the same name. Is that a reason that we shouldn't name him that? I'm worried that when we announce the name our families will think it's weird. 
Thoughts?