This is a pretty cool project of yours! If you're really into writing and using LISP, I'd recommend trying out GNU Emacs (assuming you haven't given it a shot already).
I switched from NeoViM myself, and I found that maintaining an init.el file to be much easier than an init.lua or an init.vim.
Of course, I don't dislike NeoViM. I think it's a great editor with a bright future. I moved because I wanted a GUI editor, as well as a stable release cycle. I stuck around because I found ELisp both easy to read and write.
If you're learning LISP languages, I'd recommend taking a look at these dialects:
It's great to see someone else learn LISP languages! I've found them to be both readable and useful, while most languages struggle to balance the two.