By doing so, you'll be giving this and the other characters a strong identity. No reader is going to confuse Kim and Lorna. It's not just the look and sound of the names you have to consider, but also their rhythms. You could name your characters Ted, John, Frank, Jane, and Ann, but we would start feeling like we were being hit over the head with a hammer. Since your readers are going to see these names over and over through your book, make sure it's a pleasant experience.
Names come with psychological baggage.
We react differently to Hepzibah and Kate, as do we to Jake and Armand. We can't help having opinions about names. We probably have an instant mental image of a Shari-Lynne, not to mention a Chudleigh. If you name a character across the grain of what we expect, you 'd better have a good reason for doing so. We all know that a boy named Sue is going to have a rough life, so if you have a character with a name that should give them grief and it doesn't, like Hepzibah, we'll wonder where your understanding of human nature has gone.