If you want corner carry, I'd consider just doing the f242 string. Clears them all the way across the screen. I'm not sure about the frame advantage though. I was going to be look into some of that stuff later tonight after work.
Something I want to experiment with is performing hard knockdowns then break into a run. You can push them to the corner a bit while maintaining advantage, then go into mixups as they start to get up. There are several strings and specials that produce hard KDs (f24, f4, etc).