Optimize nginx with minify for WordPress

I recently rent a vServer and now I am playing around with nginx, fastcgi cache and my wordpress setup. It’s running pretty fast right now but in all speed test I came across my js and css files. Is there some kind of minifying implemented in nginx I could use? Also my pictures galleries do have a lot of pictures, is there something else I could use to increase the performance? (all pictures are stripped down to a minimum file size already)

This is my nginx.config:

user www-data;
worker_processes 1;
pid /var/run/nginx.pid;

events {
    worker_connections 768;
    # multi_accept on;
}
http {
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
    keepalive_timeout 10;
    types_hash_max_size 2048;
    include /etc/nginx/mime.types;
    default_type application/octet-stream;
    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;
    gzip on;
    gzip_disable "msie6";
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_buffers 16 8k;
    gzip_http_version 1.1;
    gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;
    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*;
}

and my host file:

fastcgi_cache_path /etc/nginx/cache levels=1:2 keys_zone=MYAPP:100m inactive=60m;
fastcgi_cache_key "$scheme$request_method$host$request_uri";

server {
listen 80;
root /var/www/blog;
index index.php;
server_name IPADRESS;
location / {
try_files $uri $uri/ /index.php?$args;
#Cache everything by default
set $no_cache 0;
#Don't cache POST requests
if ($request_method = POST)
{
    set $no_cache 1;
}
#Don't cache if the URL contains a query string
if ($query_string != "")
{
    set $no_cache 1;
}
#Don't cache the following URLs
if ($request_uri ~* "/(administrator/|login.php)")
{
    set $no_cache 1;
}
#Don't cache if there is a cookie called PHPSESSID
if ($http_cookie = "PHPSESSID")
{
    set $no_cache 1;
}
}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
location ~ .php$ {
try_files $uri =404;
fastcgi_pass unix:/var/run/php5-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
fastcgi_cache MYAPP;
fastcgi_cache_valid 200 60m;
}
location ~* .(js|css|png|jpg|jpeg|gif|ico)(?ver=[0-9.]+)?$ {
        expires 365d;
}
}

I don’t want to install a plugin just for this stuff (keep WordPress as simple as possible) so I am looking for the best basic setup for wordpress.