Nice work, agree they do not look overflashed. Light appears to be feathered perfectly from all angles. What were your setting on your speedlites if you don't mind me asking? I've been experimenting lately with 1 speedlite in each corner, manual mode @ 1/4 power zoomed to 50mm and can't seem to dial it in as well as I would like.
Chris, I have both speedlites in each corner at full power but have them tilted back towards the ceiling. They arent really bounced but feathered as you stated. I have battery packs on the flashes so recycle time is a second or two at the most. The zoom setting is 50mm.