Starting a local affiliate website

Hello everyone,
I'm really delighted to be here, it's such a great forum and I was lucky to stumble upon some great threads with a valuable amount of information and ideas.

My question concerns starting an online local website that will target other local affiliate websites. I'm from an Arab country and I found that there are actually some e-commerce websites with a huge line of products and services offering affiliate commissions on sales. I was surprised when I found out that most of them are only investing in PPC and doing poorly on SEO.Although the keywords have a great amount of search volume and won't require a lot of link building and SEO efforts to rank in the first position. My idea is to take away the opportunity they missed and sell it to them.

This is the plan:
- Build a review website targeting local search for the products they offer.
- Send my traffic to their products and make commissions.

Things I'm not sure about:
- How efficient is their tracking dashboard.
- I never ranked an Arabic website, so I'm not sure GSA SER, RankerX or any of the tools I use will help me with ranking these websites. Do I need everything to be in Arabic or using English content will help.

Will the English SEO work with ranking Arabic content ? What do you think about my idea ? Any suggestions are welcome.

Thanks in advance