Baby names

I'm only 4 weeks 1day, but I have been thinking of baby names. I like Oliver for a boy. I have a son named Elliot. So would Oliver go well with Elliot?

My son's is Elliot James

I like Oliver Thomas, I'm not sure if the middle name though...

For a girl I like

Lilian Faye (also not sure on the middle name)

And if it's b/g twins (slim chances but still) I'd name them Lilian Faye and Philip Oliver

Last name is Heath. Any ideas on my names?

Edit: yes Phil an Lil are on purpose from the rugrats because I am a 90's baby an because I really love the names.