Whenever I need a dedicated VPS I always check the deals on https://lowendbox.com/

You should be able to download via flathub too. It is self contained software but you can write to a Google or Dropbox directory and let that synch the files. I’m really a fan of logseq as well.

Docker host?

This would be my vote honestly.

Plenty of tools like this already exist. Trading view apple stocks built in app. If you just want the data those would be far easier. If you want to self host something just to say you did it or for the challenge, you can try your hand at python, libta, and yahoo raw data. There are ways to calculate the things you are wanting and visualizing the graphs as well. It’s pretty fun and interesting!

Edit: just found this on awesome self hosted

https://ghostfol.io/

This is absolutely gorgeous! How would one go about cloning this onto their system? I have been using NixOS for a bit now but have not messed with home-manager or flakes yet. Is it possible to just clone all your files and redeploy? Any articles or videos explaining the process to clone your setup? Thanks in advance!