I still a newbie, after 6 months of learning maya in a slow pace.
Practically here's what I would do (but that is just me):
Create the curves that will funcion as "borders" on the nurbs-pathces-to-be. The boundry tool needs 3 or 4 curves to work.
Do the boundry thing, and make the 8 surfaces.
I'm not sure if all of your nurbs surfaces can be attatched to eachother. Maybe you simply can let them all stay as pathces.
But that leaves (probably) the "problem" of "aligning" the surfaces. This is where my knowledge is woid.
So I recon you could try to attatch the surfaces together (the shark tut in the VIP section is a great help to nurbs-work) or simply let the object stay as a pathced object.
I do not support Bush! Nor Saddam! Long live UN!