well, I have a 2.5 year old Erica

So, now you know one under mid-30s!
And she is the sweetest child ever. Just a ray of sunshine.
My requirements for a name were close to OPs. I wanted a name everyone knew but wasn't in heavy usage right now. I disliked being one-of-many as a kid, so I tried to stay way far away from the top of the SSA list. I actually tried to stay below #500 - yes, seriously.
My other daughter is named Hilarie.
Other names that were considered over time - Veronica (this was our top pick for Erica - until she came out and it just was too much name for such a cute little baby), Dana, Evie, Tanith, Heather, Felicia/Felice, Lana, Dawn, Laurel.