Thanks all for the replies.
Since I need to be in CDG in August and October I decided the following. Will be sure to post comparisons here. Seems the consensus here for the single traveler on a night or day flight on the A380 is 3L and 1A/K on the B777. How sub-optimal is the food on the brunch flight? Should I eat in lounge?
August:
AF11 JFK-CDG (A380 2155 departure)
AF22 CDG-JFK (B777 0800 departure)
October
AF23 JFK-CDG (B777 1625 departure)
AF10 CDG-JFK (A380 1650 departure)