You mentioned riprap in your reply about the overflow. Is it expensive there? Instead of spending so much time adding dirt to the inside of the dam to make it safer for people to get out of the water if they slide in, would it be possible to add riprap to the to of the dam where the water will be? This is done on large Reservoirs to control erosion from the waves of the Reservoir, and to discourage animals from digging into the dam, but it would also make it a lot easier to get out of the water if somebody fell in. As it is, with what you are doing now, I don't see it being any easier to get out of the water with the additional soil that you are adding.
Too steep at the moment to add rip rap. Would take a bunch because it would roll to the bottom at this slope so the entire slope would have to be rocked. Will bring the slope out as planned then only add rock at the waterline later if erosion becomes a problem.