4.05 CD Batch INV500 pgm ?

Good day.......hazy, hot & humid.......

Here's a multiple choice quiz.

We are going to interface a warehouse management system
with BPCS 4.05CD.
We will pass Purchase Order Receipt data, Shop Order Receipt data, DRP Receipt 
data
to BPCS using a data que.

Would you:
  A. Try to use CIM520 ( never been used before here)
  B. Write a "batch" version of PUR550, DRP550
  C. Write a "batch" version on INV500
  D. Write a new pgm(s) that only has the code necessary
      (rather than the "extraneous " code in the above)
  E. buy & implement SAP  ( just kidding..)
  F. none of the above

Thanks,
Jim Barry