Unfortunately you're going to be in for a very tough ride. Theres nothing wrong with targeting high end keywords like "Adult Toys" but if it was easy, we'd ALL be doing it.
Anything in the adult niche is pretty diluted as it's a huge, profitable business. In order to get your website ranking you need full onsite optimisation as well as HIGH QUALITY links. Nothing that is spammy, no link packages or anything like that.
Without hiring a professional or spending the next year learning online marketing, it's going to take time.
However, all is not lost. Work on social media websites and look at marketing your business offline. You won't get many people sharing your pages or pictures but it's a free source of traffic and you can certainly get solid traffic from it.
I could spend the next hour here walking you through the basics but I think that time would be wasted because there are websites out there that already do that. Have a look at:
http://moz.com/beginners-guide-to-seo
The information there is solid and completely legit!
Good luck