Uploading contents into a repository is the longest phase of its development, as it starts the minute the repository becomes live (usually way before it's published on the Internet) and it does not have a specific closing date, but lasts while the repository is active as an open content provider. In GrandIR we're aware that a wholy manual procedure for content ingest may be very demanding in terms of person-months, especially for projects that do not usually have large teams. That's why GrandIR has designed project support tools for accelerating the rate of content ingest into repositories, either by providing external staff with required expertise for manual content ingest or by implementation of strategies for automated ingest of contents. Automated ingest should be anyway validated or complemented via some manual processing and reviewing.
Availability of experienced external staff may also be a good opportunity for local repository team members to learn standard procedures of dealing with content ingest in case the operation is performed at the institution.