Hi Amicable,
For First Question - Our Material/Equipment appears as the Free item in the PO. Hence the Net Price is Zero. So referring it in the contract might not act as required.
Also the SES posted is unplanned service, which mainly describes the duration the Material/Equipment was rented.
For Second & Third Question - Presently i am not working on a RLM project, hence does not have access to it. As far as master data is concerned, the basic data set up will be good enough, unless specific requirement mentioned by Client.
Thanks,
Akash R M