ee will get you going easily enough; it's surprisingly got several features that I've never used.
Currently there are 241 programs under /usr/ports/editors, and 57 of them have the string "text" in their description. I'm sure one would do.
I was a real newby once, and someone told me "pico" was the thing. I got hooked, unfortunately (well, it's not that bad) and now:
alias | grep pico
pico nano
So, it's "nano", which is the GNU pico (a few extra features, but I've used nano so long now I've forgotten the disadvantages of the uw one...)
And I discovered this one --- /usr/ports/editors/e3. Written in assembler, 10000 bytes (relatively tiny) and has pico, wordstar, vi, emacs and nedit style interfaces/key bindings. Small enough to build, stick in /bin in the extremely unlikely event that things ever get fubared and
/usr can't be mounted ... like Hard disk failure, I guess...
Oh, BTW ... good choice, FBSD 😃