Depending on the scale and distribution of your organisation, it may be worth reaching out to a wide audience (e.g. via intranet) and/or specific business units, teams, groups etc. that you think would have content that should be part of your solution once you go live.
You will likely also pick up feedback on what content that the end-users are looking for in particular. Making end-users work on-brand is easier if they have branded content readily available.
By doing this, you may also be able to identify ambassadors that can help you get Templafy properly integrated, and can act as "super users" after launch.