maybe COCOMO II or COSYSMO to give you an effort estimate. They're meant to be calibrated to your environment though. Or a book like this: DeMarco, Tom. Contro

maybe COCOMO II or COSYSMO to give you an effort estimate. They're meant to be calibrated to your environment though. Or a book like this: DeMarco, Tom. Controlling Software Projects: Management, Measurement and Estimation. ISBN 0-13-171711-1.