The only time I've OLCI'd for WT I managed to get the front bulkhead row, I think it was 39H on a 70J 747. I was Blue at the time and was quite surprised because I'd purchased the ticket and OLCI'd immediately and it was only 4hrs before the flight left.

IIRC It was quite a rubbish seat TBH since it was just beside a load of children, beside the galley, against a bulkhead so nowhere for my stuff (or legs) and close to being bumped by the trolley...I didn't get a wink of sleep, mainly due to stuff unrelated to the seat.

If you looking to fight over this one don't bother