Which combination of factors suggests that a predictive, plan-based approach is the best way to…

Which combination of factors suggests that a predictive, plan-based approach is the best way to structure a project?
The organization has never encountered the need for these deliverables before, and the expected cost and time to complete are really not the priority; instead, the sponsor has said that they would like to see a series of prototypes so that the organization is better informed about options.
The organization has determined a set of relatively fixed requirements, there are some clear dependencies among needed activities, and you’ve been told that you must not exceed the rather short time frame and moderate cost limits that have been given to you.
The deliverables you have to achieve are very modular. They are related, but you’ve been told that the organization could begin to use any one of them at any time and not in any particular priority order.
You are embarking on a new strategic service direction in the organization that will give you a competitive edge. The problem is, you haven’t really finalized exactly what all the services will be, and it seems likely that different needs will emerge across the different countries in which you operate. However, the CEO seems willing to fund a project team for at least a year or so to see what you can profitably implement in three to five countries.