Looking cool there. I like it alot. taking it into illustrator would be a doddle and it would mean you'll have a very small file size and print it at any size as vector files are resolution independent. I'm sure you know all this already.
A quick and dirty way of exporting it into illustrator is to select each colour and "Make Path" from the selection. This way you'll have several sets of paths for each colour (black and blue from the looks of it).
