Thanks for the details! We have taken a close look at your job detail, and prepared a SEO plan + Audit Report, which are attached here with for your ready reference.
I advise you to use 15 keywords, in order to obtain higher results from more keywords in SE's. Not more in order that the website will not be Over Optimized and the website will be penalized by the SE’s.
We'll collaborate with you to prepare the list of phrases and words to get ranked.