Originally Posted by
Kagehitokiri
NH F is certainly very well regarded, maybe even better than JL, seem to recall they open up F award inventory one or two weeks in advance of flight
Both have their merits as noted above. Either is a fine choice.
Booking one F and on J on ANA is a bit of a risk as they routinely let F go out with empty seats rather than open up award availability. I think you are thinking of Lufthansa opening up F inventory at 14 and 7 days out. No real pattern I can discern on ANA. That said you have plenty of time and if other options open up you can change and redeposit the miles.