1st of all, thanks a lot for EPIC. It made my peers getting envious eyes...
The EPIC Editor uses the basic text font, which is IMHO no good idea. Me myself I prefer monospaced fonts in code editors. But choosing a monospaced font as basic text font makes the Eclipse UI look bad to some extent. Please treat an additional item to EPICs editor preferences to let one select his favored font without affecting the whole UI.
Please add a feature request to the tracker.