Modular Synth Panels

Hi,

  I just designed a 3U wide panel for the Buchla 281 quad function
generator.  This is pretty much my first panel that I've designed.  I
want to fit 4 of TOPPS from electro-music.com PCBs behind this panel
using as little space as possible.  I have uploaded the FPD file into
the file section and would like some more experienced panel designers
to look at it and let me know what they think, basically will
everything actually fit onto the panel,will any of the writing be
obscured by the jack washers etc...

Thanks for any input or advice,
Dave