Import Workflows from Teamworks to SharePoint 2010

Hi,

I am working with a client that is using a workflow management tool called Teamworks.  It has some basic workflows that can be matched up with SharePoint Workflows as far as functionality goes.  The client would like to keep records of all this in the new SharePoint system and completely sunset the old system.

The problem is there are 100s of documents, some of them with over 50 workflows.

I can imagine that I can re-create all the various workflows in SharePoint Designer and then create a tool, like a Windows Console Application, which will:

for each (document)

   import the old workflows as data from the db, and then use

   SPWorkflowManager.StartWorkflow()

  to re-create each workflow in SharePoint and then set the Date and User fields from the old data.

Any advice?