Your backlinks are strong on paper, but a lot of them come from your own family of sites like dvcmarket.com, dvcloans.com, and dvcfirpta.com. Links between sites you own count for less with Google. The win here is links from sites you don't control: Disney fan blogs, travel writers, and forums where DVC owners already talk. Pick two or three of those, give them something worth linking to, and each new independent domain will carry more weight than another link from a sister site.