MOTM

>B) Are there other options for power?

I use the 900 to supply +/-15V in each of my cabinets. In one cabinet 
I added a separate 6A +5V Power One supply to handle the additional 
needs of the 500/600 series. The two power supplies feed a 990 power 
board. This gives me plenty of power for any combination of modules. 
Going this route requires rewiring the 900 so that both power 
supplies have their own fuse even though they share the same power 
switch.

I've been meaning to add this info to my website. In the meantime 
here's a quickie pic showing the two power supplies mounted in the 
cabinet (minus the 990 board):

http://www.tellun.com/two4one.jpg

I don't know if you can apply this idea to an SKB case.