Hispanic Family lineart

I have the colors all planned out and lineart done.  When I saved this I was wondering why it was taking so long and then I realizing that the psd file is HUUUUGE.  I'm working with 800 dpi and over 6000x2000 and it's awesome.  I don't even know if I'll have anything big enough to save it on when I have to move it off my university's network.  An external hard drive with at least a couple of terabytes is defiantly going on the shopping list.

So, here it is so far: