Mock ups

We've talked a fair bit about how figuring out what characters' names are and what they look like can give us a better idea of how they'd behave, so after ages of trying to work out the personality of my protagonist(s), I've come up with this mock up for the book cover (I came up with the working title in the process).  So now I have the looks, I just need the names... and to figure out if I want to write in first or third person. 

I know it's important in all fiction, but this piece is going to be SUPER character driven, so the names have to be perfect; I need to nail these characters.

Any suggestions would be more than welcome :)