I settled on McCalls 7186, View A.
I cut it with my usual swayback alteration of about a 1/2" overlap (for a total of 1" decrease) and sewed it it up exactly as the pattern directions. WARNING - Note that you have to cut out one of the fronts with the pattern piece wrong side up - which the directions indicate, but this is unusual. Because you're only cutting one piece on a single layer, why they didn't just print it the other way is beyond me. Normally I don't read the pattern directions, but in this case something told me it would be a good idea to. I am glad I did!
I love this dress. In fact, I'm wearing it as I type. I took it in a tiny bit at the waist gathers just to secure the overlap a bit more to resolve some minor gaping at the bust (I'm a 34DD, but short waisted). The gathers are flattering, and it is super comfortable. I have had no gaping issues today, and don't have to wear a camisole or tank underneath either.
I will certainly be making this again in the long sleeve version for fall in a heavier knit.