My laptop is better than what the company can provide! Just because I work at a "for-profit" startup doesn't mean they actually make a profit. I even had to transition our servers from AWS to DigitalOcean just to save on server costs.

I'll probably first look into running it on a dedicated SSD on the spare laptop, and if that goes well, move some subset onto my main laptop (2014 MacBook Pro 15" with 4TB SSD).

For a "slippy map", I use Leaflet with some scraped MOBAC tiles. https://github.com/peterburk/bamb

Search/geocode is missing though, and that's what would really make it more useful. Particularly if I can cut down the geographic range to squeeze it onto my 64GB phone.