Sounds like an amazing opportunity. I would second the ceiling outlets, especially for your long arm. There's also a spring thing-y that retains the extra cord as the quilting head moves along the rail so you don't have all that extra cord laying around. Here's an example:
http://www.flickr.com/photos/79278817@N05/7174742434/
Also, you might want to take a look at the special organization thread in the pictures section:
http://www.quiltingboard.com/mission-organization-f23/