Help!

Elizabeth
I'm 21 weeks pregnant and I'm having a baby boy. I love the name Ethan and I'm sure that's the name I'm staying with, but I'm debating if I should add a middle name. Any suggestions on middle names? This will be my 3rd baby. I have a 6 year old boy name Nathan & I have a 7 month old girl name Nathalie Rose & well I'm pregnant with baby boy that will be name Ethan( Ethan by itself or with a middle name?) Not sure....