Well, the first thing that got my attention is that the bull doesn't have as much white as most Fleckviehs. If your goal is to have some Fleck looking animals, you may want to go withan AI bull with a completely white face, as well as white on the underline, legs, etc. so that you have a greater chance of getting calves that have the Fleck look.
Apparently this web site hasn't been updated in a while since his EPDs are from 2009. You mention that he has good calving ease but his calving ease EPD is very low and his birth weight EPD is very high. You may want to check his current EPDs on the ASA website.
Only you can answer how many cows to AI to the bull. However, if your goal is to get an Fleck influenced heifer out of the deal, and assume that you are going to only get 50% conception and 50% heifers, you would need to breed four cows:
4 cows @ 50% conception = 2 calves
2 calves X 50% for heifers = 1 heifer
Good luck!