Save the money - hire a nanny - send child + nanny down to WT. Reeelaaaaaaaax in F..... No?

Here's a pic of the E/F layout: http://www.airreview.com/Seatmap/BA/A380/2F.jpg
It's angled, so you have to lean forward to keep an eye out. F doesn't have a good layout for this, as it's built for privacy. You can keep a better eye out in J with the opposite facing seats.