It may take making more category pages than you planned so that you can have both generic category pages and brand category pages. Then once the target page has been identified you can use your keyword as consistently as possible on that page.
You’ve researched the keywords you want to optimize your site for and now you need to decide which keywords will go towards which pages of your site. You should optimize a single page for only one main keyword. I think it’s easiest to organize keywords into three categories: Brand, Category and Product. See the breakout below: