Name debate!

So my SO and I are not finding out the sex so I want to have a set name for a boy and a girl before we go in to have baby! He is dead set on naming a boy Rip like from the series Yellowstone. I love unique names, we named our other son Branch from Longmire 😂 so it seems fitting BUT I am just not sure yet if I can do that one. I think of Rest In Peace 😬😳 but I’m not 100% against it either, we would do Rip Micheal. HELP!?

And I really love Ivy or Millie for a girl