Hello,
I'm a PHP developer specializing in the writing of scraping scripts. I could write a script that would automatically conduct the needed searches and download the images accordingly. Given that it is fully automated, this would guarantee 100% accuracy, and not missing any of the 600 records you're looking for.
All of the results would be manually reviewed by me ahead of sending to you.
Once completed, I'll have the results zipped, and uploaded to a server for you to download. The files will be named according to the search term used to find them. Or I could have a specific text extracted from the search results pages to name the files after it. Whichever you prefer.
If interested, we could chat to discuss further.
Regards,
Amr