The menu configuration sounds complicated, but in practice, the actual interface is easy to navigate and logical.
I stopped reading here.
Drop down menus should never, ever go deeper than 2 levels. It is extremely bad interface design. This is part of why DewDrop is evil; it invites people to create horrible interfaces. Just because some other authors made the mistake of eternally nested drop downs (looking at you, BigWigs...) doesn't mean you should!
Stop now before it's too late.