I'm up for it, my PC can handle modpacks with shaders on so I think I'm fine.
The Discord server and whitelist are good ideas to keep things running smoothly, but anti-cheat plugins and other such measures most definitely need to be implemented as well. A server that incorporates any sort of financial incentive or that's to be played by lots of people needs safety from that. This isn't 2b2t haha.
I ran Minecraft servers years ago, from Alpha to final release 1.12
I have some experience, and when you open it up, things can get messy.