Happy to help..
We have installed a number of OS ERP systems under the two names Compiere and now Adempiere. I am not certain if you know of them.. But, they are in the process of adding a manufacturing module but unfortunately, they do not have a PM or CAL module.. And, unfortunately, all of our work with them revolves around Oracle 10g. So, we will need to find a common interface for our clients between these two DB's and UI's. But that is in the future. Today, we too are excited about your ability to take on these requests and see them to installation.
Thanks..
BTW, where are you loacated we are in NY