GoyoEnter not being executed when called with autocmd

[MrVizious]

Hello everyone.

I am trying to execute Goyo automatically with any markdown file (I've seen it asked many times online, so nothing new). However, I also want number and relativenumber to be on when in Goyo mode. I tried this part of the wiki to execute a couple of commands when starting Goyo, but it only works when I manually enter the Goyo command.

This is what my relevant part of goyo.vim looks:

function! s:goyo_enter()
	let b:quitting = 0
  	let b:quitting_bang = 0
	set number
	set relativenumber
	set scrolloff=999
	autocmd QuitPre <buffer> let b:quitting = 1
	cabbrev <buffer> q! let b:quitting_bang = 1 <bar> q!
endfunction

function! s:goyo_leave()
	" Quit Vim if this is the only remaining buffer
	if b:quitting && len(filter(range(1, bufnr('$')), 'buflisted(v:val)')) == 1
		if b:quitting_bang
			qa!
		else
			qa
		endif
	endif
endfunction

let &cpo = s:cpo_save
unlet s:cpo_save


autocmd! User GoyoEnter call <SID>goyo_enter()
autocmd! User GoyoLeave call <SID>goyo_leave()

And I have tried the autocmd feature with these two options in my init.vim file:

:autocmd BufReadPost *.md silent! Goyo 80
:autocmd Filetype markdown Goyo

I have not used them both at once, of course.

Whenever I open a markdown file, a normal Goyo instance opens, but without the number options set. Also, I have to press :q twice in order to exit.

Any help would be appreciated. Thanks in advance!