Can I just: no harm using ohmyzsh! I used to use it myself. But if you get time I really recommend just choosing a good plugin manager for zsh and installing some of the most popular plugins!
It will fucking FLY like the wind! Imagine 10x as many features but instant load!
You'll learn so much cool stuff you'll wonder how you ever lived with something so clunky.
I really recommend Antigen plugin manager. Then look up Awesome ZSH that will give you a ton of links to great plugins and themes.
I’ve gotten ohmyzsh where I want it with plug-ins honestly. The theme (can’t remember which now) is double lined and color coded, perfect for my needs. I’ll have to poke around and see if I can replicate it with antigen.