The Skelligs are amazing and already reviewed a thousand times. In the past I've been there twice and I'd love to go back - weather permitting. If you wish to go, you could consider going April to August when the puffins are flying around just like they were flying around Rey in the Star Wars film The Force Awakens.
I wrote my own review to the newsletter at CPL where I used to work, see link
The Skelligs,