Need an expired domain finder built - with metrics from 3 different api's etc.

I basically want a program to run on my 4gb or 8gb ram computer that will crawl a list of 200,000 urls to find all external broken links so that I can find potential high authority domains I can register. I'd need to have a variable search depth, at least 2 pages deep to find enough unregistered domains. Even if 200k urls finds 20 million internal/external links, it must still run without dying and freezing. This is the problem with most programs such as xenu, screaming frog, and several others, none of them can handle a large scale of scanning. I want BIG 1. It must 1st find all the external broken links inside the 200,000 domains, which may equal to a huge amount of even 1 million broken links. 2. It must 2nd, check all those broken links for registration availability using the namecheap api. 3. It must 3rd, check those available domains metrics DA/PA/mozrank/backlinks using the [login to view URL] api's 4. It must 4th, also check the available domains metrics of CF/TF/cftf ratio/backlinks from the [login to view URL] api's 5. It must 5th, be able to allow me to take the urls, place them in excel, so I can organice them, then buy the best ones. 6. Continued maintenance or support would be appreciated as well. It must not freeze It must be consistent It must be fast Here's some examples of similar expired domain finders: [login to view URL] xenu - this is slow and freezes everytime it reaches 2 million found links screaming frog - this is slow and freezes and runs out of memory expired domain miner - this is twice as fast as xenu but not at all good enough. [login to view URL] - this is slow, expensive, freezes, and is dead atm [login to view URL] - this is dead atm Then of course I would need to organize all these urls with the stats at top via excel or something, then I can buy the best ones. Let me know if you know of some software to crawl tons of urls for broken links and prices or if you can build one yourself.