Hi,
I am expert in web scraping & python & db & create web site.
I ever implement some crawler for my own website, using Scrapy - python framework at web scraping.
I am expert at MySQL and PostgreSQL and the python db module - SQLAlchemy.
I know your real requirement, you need a scraping system, manageable and auto running. There will be some background running python scripts and some front web pages to manipulate the background python scripts.
I will consider your whole requirements, design it, then implement it.
Thanks for reading.