Avios plus cash booking

[pdw8]

Hi,

Looking at LHR – SIN in economy one way and have some Avios that save £1000 off the cost of four of us. One key aspect about this is looking to get the sets of twin seats at the rear of the 777.
If I do a cash booking I can choose the seats during the purchase process (I am Silver) but when I try the same booking as reward I do. not get the seat option.
Can I book these after buying as an avios booking straight away still?

[AndrewT]

Yes as soon as you have the PNR you can go in to MMB and choose your seats. Costs exactly the same either way (if you have to pay).

Edit: Missed that you said you were Silver, so just choose for free once you have the PNR.