LEMP + HHVM Configuration

I’ve been reading about HHVM tonight, and I’d like to try it out myself. From what I’m gathering, it’s as simple as installing HHVM, and then configuring a server block to use it instead of php-fpm (then running “/usr/share/hhvm/install_fastcgi.sh”, right?). So before giving myself a headache, I thought I’d ask a preemptive question.

This is my current server block:

server {
	listen 80 default_server;
	listen [::]:80 default_server ipv6only=on;
	root /var/www/anightinburlington.com/public_html;
	index index.php index.html index.htm;
	server_name anightinburlington.com www.anightinburlington.com;
	location / {
			# try_files $uri $uri/ =404;
			try_files $uri $uri/ /wordpress$uri/ /index.php?q=$uri&$args;
	}
	location ~ \.php$ {
			try_files $uri =404;
			fastcgi_split_path_info ^(.+\.php)(/.+)$;
			fastcgi_pass unix:/var/run/php5-fpm.sock;
			fastcgi_index index.php;
			include fastcgi_params;
	}
	error_page 404 /404.html;
	error_page 500 502 503 504 /50x.html;
	location = /50x.html {
		root /usr/share/nginx/html;
	}
	# W3 TOTAL CACHE
}

I’ve only ever really configured these files once (relatively new to VPS, and I learned a LOT at once when I set this all up). That being said, I needed to use this line to get my permalinks with Wordpress to work properly:

try_files $uri $uri/ /wordpress$uri/ /index.php?q=$uri&$args;

I believe this was because I contained my Wordpress installation within a Wordpress folder (var/www/site.com/public_html/wordpress/), rather than use the root. So my question is, how do I go about configuring HHVM with that in place? A lot of guides I’m seeing are saying to comment out all of the old server block code, which would undo my permalink alteration. Any ideas?