Linnea!!! It's a plant, it's pretty, and it flows with the last name. I think Lynn is a little dated. If I had to use it, I would spell it Lin because I have an aunt by that name, but either way it just seems dated and not as pretty and plant-like as Linnea. There's also the namesake of Linnaeus, which is pretty cool in my opinion (then again, I'm a nerd...)