Restricting access to SSH to only allow specified IPs is a good practice for securing your server. Also it is very simple to do. All it take is a change to one file and you are done. Be careful doing this if you have a dynamic IP. You don’t to get locked out of your server if your IP changes.
PHP 7 was officially released on Dec 3, 2015. After reading about the speed benefits for WordPress and other web applications, I decided to give it a try and upgrade. I have one WP site that was particularly slow. At some times could take 20 seconds to load. After transferring to PHP 7 server I was getting load time 8-4 seconds.