Online Shop - SEO & Google Rank

I have built my online shop on Salla.sa. Before starting to sell I need ecommerce expert to audit the website and make a checklist to get 100% ready. 1- SEO (A-Z) 2- Google Applications (Google Ad, Google Analytics, Sitemap XML, HTML Google Merchant Center, etc.... 3- Tell me what is still important but missing too. If you think you can do this perfectly, please share your proposal for review. Best Regards, Majed