I've made a layout for this long time ago but I don't know what happened to it!
I didn't use the schematic you've uploaded because it's not working properly.
You should use this one instead:
http://topopiccione.atspace.com/pjimages/ShinEiOctave.sch.jpgMore infos here:
http://topopiccione.atspace.com/PJ15ShinEiOctave.html