The MBA program is the best candidate for the initial "crawl" phase because it already has a custom admission system that is integrated with the SIS, which can be leveraged for Salesforce implementation. Executive Education data is largely managed in its own system, which may require more complex integration or migration. Career Advising and Alumni Relations share systems with other university departments, which may involve more stakeholders and dependencies. Reference:
https://trailhead.salesforce.com/en/content/learn/modules/education-cloud-basics/education-cloud-implementation
https://trailhead.salesforce.com/en/content/learn/modules/education-cloud-basics/education-cloud-integrations