This board is a real bastard to layout.  I can only imagine how much it would have taken if I did it on a solderless breadboard.  Give me an FPGA any day.

It's far from done, but everything is routed.  I still would like to add some LEDs just for some blinkenlights and debug.  And I need to add some silkscreen lettering to make it look really nice.  But these dimensions are 243x155mm.  EasyEDA says that's just under $60 plus shipping.  The real question is: what mistakes are lurking in there?