Organizing AVS sites, hubs, etc

[LD]

One more question and I'm done (for today... )..

I've built some free sites and got some submissions and I'm seeing a little traffic. I built a hub of sorts, where you can jump from any of the free sites to the other.

In order to get listed, I set the sites up as:

"lusciousdelights.com/niche/index" so I could put recip in index pages of niche sites.

I'm at the point now I need to look at a bigger picture and maybe map out what I intend to do, or at least have some idea in my head. I want to do some AVS sites. Should I follow the same convention? Or should I broaden the index and maybe have a page for each niche as in

"lusciousdelights.com/broad group/index/niche...?"

And finally, should I tie all these back together to form a hub?