My Z3S5 Lisp[1] is rather big, it's intended to integrate well into Go programs, but it's based on the 1-page Nukata Lisp[2]. Go creates much larger binaries than C, though.
It looks like your lisp has a lot of built-in/primitives, I'll have to explore!
I also wrote a simple lisp in go, in my case I added LSP support for completion and help-on-hover, which was a fun addition I've not seen in anything else.
[1] https://z3s5.com/ [2] https://github.com/nukata/lisp-in-go