Well, are you ? Have you determined what the implementation cost for a MDM or a MEAP is going to be? How about the training for your administrator, developer, helpdesk? Then once you have it all deployed, the run rate for data connections, voice, data/voice roaming, international data/voice, apps, accessories?
I am not out to scare you, just want to make sure you consider the TCO and add that into the overall value proposition you developed for mobility. It's probably there and you ARE going to do it but don't go in blind.