I have never used Engintron (looks interesting) so I cannot say yes/no for that.
But using a reverse proxy like Nginx has a huge benifit. I have done some testing by optimizing each process of nginx to get all the juice out of it, and it was able to handle a ton of requests per second.
I have used VestaCP that has a good apache+nginx config (I recommend this)
Here's the intresting part:
(For the customer/delivery app)
So here's the catch, if you just register for a Free verify of Cloudflare, you get a lot of benifit because CDN will cache all the resources and then nothing will touch your server (unless you update the application)
The best combination I see is use CDN + cPanel that runs on Apache+Nginx+MariaDB(or MySQL)
Also, php7.4 seems to be fully supported by Foodomaa now from v 2.8.1 (this too gives a good boost) - make sure OPcache is enabled.