Am interested in finding out what y'all (or y'all's company) would charge to manage a project. How much per hour or would you do it a flat rates?

We are helping to integrate legacy systems into our database program for tracking occupational health data. We would be grabbing data from client's HR system and also sending data out to assorted systems. We would be helping the client figure out how to standardize a hundred or so different 'lookup' tables.

What do you think?