Does anyone know if any bulkhead row (center seats DEFG), has good foot room on the "low density" 777W?

We are traveling with an infant and before throwing a few hundred dollars for the bulkhead preferred seats, I wanted to know if it's actually possible to stretch out.

Row 18 and row 50 are available, row 30 is taken. I have been searching for any photos or reviews on these seats but haven't found any.