may be late in answering but i am not sure what you are referring to with the "You will need to get the display port adaptor to connect to the TB ports." portion. Unless you meant the dual link adapter?
In order to connect a 30" ACD to the nMP you need a Dual Link Adapter. The cheap, single will work, however, it will max at 1280 x 800. The dual link adapter gives the ACD to hit the 2560x1600. The dual link adapter takes the dvi and usb cable and from the adapter, a usb and display port able connect to the nMP, so you lose 1 of the 4 usb port and 1 of the 6 thunderbolt ports for the ACD