SEO in Partner in Spanish and English

I have a client's website that needs to improve search positioning. Its a small website and the company sells young flower plants to producers, and products for the maintenance of greenhouses and other products to that same industry. The target clients are flower production companies of a specific latinamerican region, and some in the US. I need a provider who can deliver quick results on a small budget. Someone who knows spanish and has worked before on bilingual SEO projects (Spanish-English). The job needs to be 100% spam free. I also need a detailed plan of what you plan to do before I choose you, and a price for the whole project (no hidden costs). I will provide you the URL of the website through PM once you've sent me a PM with examples of similar tasks you've successfully completed. I will have at least 2 such projects a month, so I am looking for someone reliable and unexpensive to form a long term relationship. No generic bids please! Kind regards, Ricardo