Well, probably no need to panic, as quintuplets are pretty rare... :) But yes, I sure think they are too similar in sound.
One momma namenerdin' in the fleeting quiet moments between
delighting in and losing my mind amidst my four kiddos
To peruse my top 100ish names:
http://www.behindthename.com/pnl/82589Bits of blogging here:
http://jodifriesen.blogspot.ca/And family cuteness here:
https://www.flickr.com/gp/41705