From our perspective at Kontera, it's probably best if you have at least 5 Hubs up, which you do, before you apply to become a Kontera publisher.
However, there's no reason you'd be penalized for not having a specific amount of traffic on your Hubs. The biggest thing we're looking for with Kontera Publishers is quality, original content. As long as you have that, you're a great candidate for becoming part of the Kontera Network.
- Jonathan Cohen
Kontera Community Manager