Looking at a future mileage redemption from Hong Kong to Los Angeles.

Options on the days I'm interested in seem to be:

CX 884 13:05-09:40 in First for 105,000 Avios + £52.
CX 882 16:35-13:15 in First (same cost) or Business for 70,000 Avios + £52.

Got a F flight from JFK-HKG in F the previous month and I do like it especially for the 15 hour duration and there's a lot of daylight.

Not sure whether flying eastbound in F over J on either of these flights is advantageous, especially if it would be dark outside so nothing to see and I don't want to be asleep and miss meals in either cabin etc.

So, are there any advantages of one flight over another, time wise, cabin wise, arrival wise etc?