Lennox Head, which is 1/2 hour south of Byron, seemed to be pretty popular when I was there last Jan. The guys were having an awesome time in the surf and getting heaps of hang time, the surf starts breaking about 100m out and rolls through to the shore.
I saw a couple of guys on the beach at Tallows but they didn't go out, there can be a pretty narley beach break to get through there. Lennox seemed to have more of a kiting scene.
Have a great trip and happy kiting

.
Rod