That looks alright, Rob. If he takes 5 or 6 readings around each of A-D, he should get a good idea of the curve and be able to construct one for himself. He could also sample for E at some times and that should allow him to fill in the gaps.
I don't know how useful it'll be to him...he might need CCD input...but if he goes here:
http://phoebe.fiz.uni-lj.si/?q=node
He can download software to help him plot the lightcurve.
Although, you can also do that in Excel, though not as accurately.