Another thing you may run into with this is that it may be difficult to get the stuff to cure properly without having it hanging during the curing process.
If it's in contact with anything (rack/tray/etc...) while curing, that part of the powdercoat may get messed up.
Most industrial powdercoaters hang the stuff, then spray it, and then run the entire rack through curing.
That way they don't have to handle it with uncured powder on it.