I think you got a good fare.

Reward seats on that route are rarissimo. Booking 355 days ahead there are 2 CW seats on three days a week on the late evening departure (none on F and none at all on BA282), and I have not seen any last-minute availability recently. The last few times I have flown BA282 CW and F have been full. Nothing's impossible and you might hit lucky but realistically I'm afraid you are likely to be flying in WT+.