First of all congratulations on scoring two FC seats

the configuration on the 773 for NH F is

1-2-1
1-2-1

only 8 seats. So for the honeymoon you might want the middle two seats row 1 or 2. Doesn't really matter.

I should add since you are using UA miles why don't you add a Southern Asia destination it won't cost you any extra miles. Taxes will increase but not more than 10-20 US dollars.

You can potentially go to HKG, SIN, BKK