Advanced Web Scraping

Hello, We want to scrape a classified ad website for some information. Estimated number of links to be scrapped: 2 Million. It's not an easy task that's why we are looking for an expert in web scraping. In addition to the normal methods which websites use to detect and prevent scraping, you may face: -> Javascript & checking if cookies are enabled validation code. -> Captcha (see the attachment for captcha example). I want to know your suggestions or ideas on how to pass these problems, only bid if you are sure that you can handle these problems, because if you can't, you won't be able to scrape except for few links before you get detected. I'll provide the link of website and what we need to scrape and further information in private chat. I want an error free, clean and well documented code. I want the code to be in php or python, however, if you are able to deliver it perfectly in any other language I'm open to suggestion. Milestones: 50% After getting the code working, and delivering sample of 50,000 scrapped links. 50% After getting the code and testing it on my side. Please bid only if you are sure that you will be able to do it. Thank you