Thnx @Shawon, please let me know when these features are implemented as that will be my starting point.
Getting finances up and running will set the start of using WP ERP, anything else can be sorted out but that is of somewhat less importance.
As soon as I can start with WP ERP I will be more than willing to help you out as I have quite an experience using ERP/CRM systems and know quite well what is needed to run a business.