I really like the nature-y simplicity of [name_u]Laken[/name_u]! [name_f]Lakelyn[/name_f] and Lakelynd aren’t my personal style, but I would choose [name_f]Lakelyn[/name_f] between those two because I find it a little easier to say. Overall, [name_u]Laken[/name_u] gets my vote–I think [name_u]Laken[/name_u] [name_f]Grace[/name_f] would be lovely!
Lakelyn is beautiful!
Definitely prefer [name_f]Lakelyn[/name_f]. It’s cute! [name_f]Lakelyn[/name_f] [name_f]Grace[/name_f] is very sweet. [name_u]Laken[/name_u] is ok too, just not as obviously feminine and sounds a bit like [name_u]Lincoln[/name_u]. Lakelynd is giving me a Lynyrd Skynyrd vibe.
Welcome! I prefer [name_f]Lakelyn[/name_f] or [name_u]Laken[/name_u], personally. 
My favorite is [name_f]Lakelyn[/name_f] followed by [name_u]Laken[/name_u] and then Lakelynd. [name_f]Lakelyn[/name_f] seems more name-like to me and sounds better with [name_f]Grace[/name_f], in my opinion.