There are couple of other alternaives:
1) Consider Scite - a bit of a fiddle to get fonts and look as you'd like, Syntax highlighting and project management is basic but it's fast and has a small footprint
2) Export a shared drive using Samba and edit using ST3 from a box with a supported OS. This is the route I adopted eventually and it works very nicely. Edit in Sublime, flip to VNC and refresh.