crazy, ok.  how many mA would you suggest then?  that was one of a few 12v DC supplies i happened to already have, but the highest mA, will have to pick up another. 
 
& nicely done to you as well, the housing & stacked PCB layout are both fantastic! 
 
one of these fit the bill? 
 
http://www.radioshack.com/product/index.jsp?productId=3875403&numProdsPerPage=60&retainProdsInSession=1&y=9&x=10 
 
http://www.radioshack.com/product/index.jsp?productId=3807944&numProdsPerPage=60&retainProdsInSession=1&y=9&x=10 
 
http://www.radioshack.com/product/index.jsp?productId=3875404&numProdsPerPage=60&retainProdsInSession=1&y=9&x=10