Great! Remember that you will need to set the user-settable 15 bits in 2 configuration Data words for each analog input channel that you are using. Words 2 & 3 are for Channel 0, and the other channels follow in order and use the same bit numbers. Once you find the decimal number for the type of setup you want, you can just copy that number to all the other input channels on the module.
It will NOT BE -32767 (all binary 1's), because the "reserved" bits will be 0.