Heya John,
Things start getting busy in the projector when you start adding all of the "gears".
What I did to mine as to build a little "rack" inside it.
I stacked my stanwax ilda board & colour correction board along with the db 25 input ,output, safety db9,axis flip & rgb level pots.
With it setup like this I have 4 screws holding in all of the electronics.
If your going to get a dpss green its a good idea to get the colour correction board.
To use an audio analogy its like a pre amp & delay for the lasers/scanners.
The dpss lasers behave differently to the diode lasers. It will allow you to have smooth fades/mixes with the colours.