I would highly recommend first of all reading "Peopleware" and "Mythical Man-month" which are all about making this type of decision. Since this is data exchan

I would highly recommend first of all reading "Peopleware" and "Mythical Man-month" which are all about making this type of decision. Since this is data exchange, you need to map out the data flows your company does and where things are working and failing currently. At that point you should have enough information to start making decisions.