I prefer Logan over Blake as well.
The girl names... I don't really like Cailyn. Partly because when you say it, it sounds like "Kay Lynn" which doesn't sound nice to me. Unless I'm saying it wrong and if so, please correct me!
Alaya... how do you pronounce that? It really depends on the pronunciation. All I can think of is when she's in high school and boys making jokes about "laying Alaya" or saying "Alaya, I wanna lay ya". Trust me, they will. My maiden name was Slate and they turned it into Slut, even though I wasn't the slightest bit slutty.
If it's pronounced A-lee-ya then that would be different, and I'd suggested spelling it a little more phonetically because otherwise you'll be constantly explaining either how to pronounce her name or how to spell her name. Most people are not very smart. I mean, I get asked how to spell Jennifer all. the. time. even though it's one of the most common female names in the US.