Generally speaking, a 13-15% return (which you mention in yor initial post) may be a bit thin for investors.
Hopefully, you`ll find someone who is interested enough to negotiate with you.
www.BizPartnerHunt.com sends out monthly lists of Angel Investor contacts to email subscribers. They also have an Angel Investor Directory which you can download for free off their homepage. I`ve seen several people post ads there looking for investors. You may want to try it and let me know if the site helped any.