Thanks Nux.......I got totally lost starting at post # 22

One more question that is really related to redemption.....US carrier seat release windows open 331 days ahead ........ British Airways opens 355 days ahead.......if as a resident of US I am looking to use Avios under my BAEC account for a flight originating at LHR ......would I be able to look and book 355 days ahead or would I have to wait?