I think it's a very soft and shy name. It's nice enough, though I much prefer
Lauren.
All of those combos are pretty nice. I think
Laura Isobel is my favorite. It has such a sweet, gentle, pretty feel to it. But it runs together a bit in the middle with the vowels.
Laura Judith is probably second. It has a nice ring to it. But if you're playing with these as names you'd consider for another daughter, I'd pick
Laura June. I think it fits best with your other kids' names.