Nice heifer calf... As a Simmie breeder, I've raised a few SimAngus, too, and now manage a herd of cattle where we're primarily working to make baldy SimAngus babies out of Angus or SimAngus cows. I like the idea of an Angus bull on Simmie heifers for a couple reasons, one being the calving ease aspect, but there are plenty of Simmental bulls that are perfectly acceptable for heifers as well if you want a purebred calf. And keep in mind that just because a bull is an Angus, that doesn't guarantee small calves or great calving ease! Considering an Angus, though, does give you a lot more options. I try to stick to proven bulls on heifers for the most part, and realize I'm taking a bit of a risk with any unproven bull, no matter what breed he is or what his numbers suggest he SHOULD be.
The other thing about using an Angus bull on a lot of Simmental females is the increased depth of flank and fleshing ability you get as a result, IF you pick the right Angus bull. You can get critical of any female, and if you think about what you might change about your heifer, an Angus bull might do the trick...deepen her flank, pretty up her head & neck... She's a nice heifer and looks like she ought to contribute the muscle and bone and performance that makes the Simmental x Angus cross click so well. We have a few cows in our Simmie herd that I try to AI to an Angus bull every year because I just think they're made for that cross.
In any case, there are plenty of purebred Simmies, percentage bulls and Angus bulls to choose from...and I don't have anything against club calf bulls, but I can't think of any reason I would ever use a club calf bull on that female. JMO...