Ashlyn is a lovely girls name. I like the Irish spelling (Aisling), but your way would make it easier for most people to pronounce.

Do you like Jake, as a short form of Jacob? Because my guess is that's what he'd get once he's a bit older. If you like it, then go for it, otherwise, might be a consideration. I think both names are nice.

I had a mummy friend who named her DD Audrey (she's my DD's age). So it's not completely unused! I think it's pretty. Not much help, am I?!