I have to stock Specialized saddle that came with the bike. I've got two main problems: 1) my sit bones just bury right in, even with some pretty decent bike shorts and 2) I get pressure right down the center of my crotch which leads to numbness. Usually the first 10-20 miles feel pretty good, but after that it kind of falls apart.
I don't know if maybe the chamois is not positioned as well as it could be for me, the saddle is not great for me, the saddle should be adjusted differently, etc.
Looks like the Toupe Sport is the stock saddle on Allez. A lot of people swear by the Toupe or Romin, and some love the Power Pro. I borrowed the Toupe or Romin, forget which, and it felt so hard while adjusting I just didn't bother. I still want to try one for a longer period of time.
Anyway, if the place you got your bike from is a Specialized dealer they may have their assometer that helps measure sit bones. So that would be step one in figuring out width. After that it could be the angle up or down that is causing pressure b/c those seats have cutouts so there shouldn't be any pressure. That said, I do know of some people who feel more pressure with cutouts.
As far as padding goes when you have your bibs on get in a position like you would be on the bike and feel where the pad is. if it's not positioned over your sit bones, then there ya go. The chamois should be tight to your backside and not have much movement, if none at all.