Hello,
I've read the requirements of your project and would like to work on it. I've over 4 years of experience in Web Scrapping (Crawling) and Automation projects using various technologies (.NET, Python, iMacros, Selenium, PhantomJS, etc.)
I'd strongly suggest you to use iMacros scripting for this project. This will result in fast and accurate results.
If you'd like me to use any other technology, I'd suggest you to go with Python or C# with Selenium. However, I'd prefer to go with iMacros instead of any other language.
Let's discuss all the requirements in detail. Once everything is finalized and you're comfortable, I'll start working on it immediately.
Looking forward to hearing from you.
Thanks.