Because you have small files, you may not benefit as much from this extension as you'll probably be limited by OS-related issues of how fast you can open files. If you could cat them together then you might benefit from this. Also, this is for newline-deliminated json whereas yours looks like a json blob. But ultimately, it'd only take a couple of hours to test this module with the sqlite command line application and get a rough benchmark, which is more reliable than my guess.
On a seperate note, I'm not sure if that data is public, but it makes me a bit uncomfortable to see lat/long on crime data on a public forum.
The files are not that small. They can have many millions of rows in each. The example I posted was to show what each row would look like. I used it in a Json array for the example, but the file itself can be in Json Lines format.
The data set blocks off the last two digits of the street address for anonymity but it doesn't look like they did the same for lat/long. If you drill down to a single block (e.g. 055XX S ROCKWELL ST), you will see 37 different latitudes and 37 different longitudes.
On a seperate note, I'm not sure if that data is public, but it makes me a bit uncomfortable to see lat/long on crime data on a public forum.