Check this:
(you don't need the stuff at the bottom of the schematic)
Just remember that the stated current handeling capacity pr channel of the 2003 does not mean that you can sink that much current on each channel at the same time. The total heat dissipation capacity of the 2003 is much to low to handle that.
Remember also that you can parallel 2 (or more) channels to get higher current handeling, but just remember what i wrot above.
I would go for 2 or 3 2003's to be on the safe side.