I think I've said this a few times, but if you are going to build your own control pannel look into a water jet cutting facility near you. All the tools and dies for cutting the holes for the components in to the control panel is similar in cost plus the water jet cutting facility will do it much more precise and clean on their C&C system.
Ive heard this and on the forum for electric brewery one person mentioned a place in nh, where i live, that does this. They already did one and had a great review. Thanks, keep the tips coming.