1) For a sponsor-hosted free site, do incorporate an FPA on the site. As the affiliate will be posting the link on his/her own hub/directory/link list, it is to everyone's advantage to have this high-sales page in the click flow.

2) From what I've heard from sponsors recently, matching models and promo materials increases sales. I've been encouraged to route the banner/photo link of a model to the sponsor page featuring that model.