How do manage to work on it in your free/spare time besides your job? Sounded like you have a full time job at day. I only have a "private" (limited access for 30 people) map incl. stats for gyms and lure module deployer and telegram for IV stats (only for Dratini, Snorlax and Lapras > 82%) and it keeps me busy for some time at least (only using 150 accounts here to scan and just 2 servers).
If you work with the guys from Brusselopole: I rebuilded the site some days before they published their source on GitHub (my site "Oldenburgopole" is still listed on the Worldopole even I took it down some weeks ago) and after they released their code I noticed that it's really kinda "crap" (when it comes to performance and coding in general), so I'm not sure how their source could deal with millions of spawn point data ;) Don't tell them please. I like the idea and the everything else, but coding-wise it's really very basic stuff.
Keep on the good work man and just in case: Cloudflare can be traced when it comes to the real IP behind their cache (that's why I guessed you used Linode, OVH and Vultr).