You don't need a GUI to work efficiently on the server. Just immerse yourself on the command line and you'll be very amaze on the power it holds.
If you are having a hard time navigating, just use your file browser. Assuming you can already login via ssh, on the location bar of you file browser (dolphin or nautilus or nemo or thunar) put
You'll be able to browse the filesystem like a local folder, when you edit the files, they will open on gedit or your default text editor.
What else would like to do on the GUI anyway?