Multisite + Marketpress + ProSites?

We have successfully enabled multisites on wordpress in subdirectory structure. Currently the only WPMUdev plugin installed is the WPMUdev Dashboard.

We would like to ultimately offer a Marketpress Site to new shop owners as a pay-for-use-service.

Our question is if we also need to install the Prosites plugin?

Thank you. Any assistance is greatly appreciated.

Mike