I've been in business shooting portraits for four years now, and I'd like to move into shooting more weddings and events. I have seconded for a few friends, but only have I done 2 or 3 of my own and they were all outside, and very rarely did I ever need off-camera flash for much of them. I consider myself pretty proficient with my lighting as long as it's in the studio and one or just a few subjects (newborns, headshots, couples, etc.). I recently did a wedding and noticed that I often either had so wide of an aperture or too slow of a shutter speed to get tack-sharp focus. I shoot with a 5DmkIII, mostly with the 70-200 2.8 and 50mm 1.4 art lenses, but I just recently got a 24-70mm 2.8. I seemed to have more trouble with it. I use triggered flashes, with either bare flash or the MagMod sphere and/or bounce attachments. I notice that in group shots of families, I'm getting the people on the ends too soft. I'm paying attention to planes, and all of that. But I'm not confident enough in group photos to shoot weddings and wedding parties, families, etc. So before I take on weddings of my own, I want to get this right. Any suggestions and helpful pointers?