Plan for the CPL a 5 hour overshoot and the IR a 10 hour overshoot including exam time
When I was teaching most people on professional courses that put the work in used the go through in minimum time, however it was the test that had to be done a couple of times, especially the IR, so it is worth thinking about that. I think 5 hours on the CPL is a little excessive. The majority of people that had problems in the CPL was failing one section, i.e getting a partial, so a quick blast, maybe 50 mins to pratice what they had failed would suffice to do a retest. With the IR, if someone got a partial, maybe a session in the simulator and a retest would do the job.