A newbie question about .info's

Launching an e-commerce site in a few weeks and I just purchase a couple of dozen .infos to redirect traffic to the site. Most of the .infos are exact keywords used in my main site. Can anybody advise me of the most efficient way to position these .info sites to be redirecting traffic to my main site. What actions will have the most impact in the least amount of time?

I have .infos running as mini-info sites, which are either geo or product specific.
since i already have a large unique c-class/ip setup, most of them are hosted separately and point one-way towards my main site. so far this has worked well for me.

Would you recommend that they all be hosted separately?