Hi,
Its a good Decision to opt for SAP.As stated by Thomas sap-crm covers the marketing concepts.
but for all implementations around the world SAP-SD is very important and almost mandatory.
most of the companies are not opting for SAP-CRM due to its huge cost of implementation and expensive license fee along with complexity.
most of the companies opting for third party CRM like sales force,seible and many more,in turn integrating with core sap.
you have more openings for SAP-SD than SAP-CRM.
its your final decision for the better option.