Doepfer

i'm trying to plan out a diy case that should be the equivalent of 6 doepfer racks.  the 
building end of this project is no problem for me but i am hoping to get some advice on the 
electronics part.
i have noticed that doepfer has the diy power supplies available for purchase but i am 
assuming i would need several for a case this size.  is there a more compact solution to 
powering a rack this size?  something that will alleviate the need for several seperate power 
cables running out of the back?
I am also wondering if anyone knows where i could get a few of the rack rails that are built 
into the doepfer racks.  the diy power supplies come with hardware to attach the modules to 
the case but they would require a piece of wood between the panel rows to attach the 
hardware too.  I would prefer that the modules were edge to edge as they are when placed in 
the doepfer rack.
any advice or tips from anyone who has built their own case would be very much appreciated.  
thanks!
sam