Welcome to Flyertalk and the BA Board
samirs and thanks for your question
.
The flight is showing as a 777-200 and the 12 First Class seat configuration which I has the old IFE.
Personally I'd take the back seat at the window 24A is showing as available and here are the loads on Expert Flyer at present.
F7 A6 J9 C1 D0 R0 I0 W9 E0 T0 Y9 B9
H7 K7 M7 L7 V7 S7 N0 Q0 O0 G3