I discovered Slickstack recently and I gotta congratulate you for the pragmatic it has been built! Went down the rabbit hole in the last few months trying to find a solution for deploying WP server on LEMP stacks: easyengine (doesn't seem to be alive anymore), Webinoly or paid solutions such as Runcloud hub. The thing about slickstack is that is built with performance in mind and with a set of fool-proof bash scripts, making it extremely easy to use. Lots of automations such as backups and checks, extremely fast out of the box and great support - which is usually missing on many projects like this. Managed to get great perf (100 for almost all criteria) in Pagespeed in just a couple of hours - from discovering Slickstack to prod. Definitely recommend giving it a try!

Its the fastest and easiest way to set up LEMP stack

How quickly it made our website. It not only made for a better user experience, it also helped with SEO.