i like the pc-3s i had on my one of my old boards. but i sold the board with extra for the fins. They were pretty nice so the quad should be good. Make sure you get your right size, they come in Small medium or large. Or look on the fcs website... surffcs.com
Did you get yours through No Flat Earth? Got mine last week... same deal. I took the front fins they gave me and luckily had the back fins from a retro quad laying around. No they're not as light as PC, etc, but the Coils are so damn light, don't see it mattering. Enjoy your Coil, they are addictive.