The CE Epd does not address weight. It is an attempt to compare the ease of calving between different bulls. Like Kenny points out, sometimes a heavier calf can be delivered easier than a light one, because of the shape of the calf. Even the birth weight Epd does not predict an actual calf weight. For example, if a herd of cows is now averaging 80 pound calves when they are bred to highly proven bulls with a birth weight Epd of +2, they should average 76 pounds if they are bred to a highly proven bull with an BW Epd of -2. The cow is 1/2 the equation. Actual birth weights may vary from 60 to 100 pounds, but average 80.
Your cows, location, and time of year you calve will all affect birth weights. Cows in a Northern cooler location will have heavier calves than cows in a warm Southern location. Calves born in the Fall will be lighter than calves born in the Spring because the cows were gestating those calves in warmer temperatures in Fall. If you have a cow herd that has averaged 85 pound calves when bred to a variety of different bulls, you will not find a bull of the same breed that will consistently give you 65 pound calves. The Dam has more influence on birth weight than does the sire. I am not sure what breed you are referring to when you say 8-10 for calving ease, but that will impact your results also. A 10 for a Simmental is not the same as a 10 in Black Angus. If you want 65 pound calves, breeding to a Jersey will be more likely to produce that result than if you breed to a Hereford.
I am not sure where you are located, but on my Ranch a bunch of 65 pound calves would be a reason for concern. I calve in cool temperatures and my cows can easily handle calves over 90 pounds. I would hate to give up 25 pounds at birth and hypothermia is a bigger threat for those little ones. If you are calving 1000 pound cows or are located in a warm climate, then 65 might be fine.