Be aware that the >55K bonus can also take a while to post so don't expect it instantaneously as you will be sorely disappointed. Many of these come with the monthly mileage bonus or at least did with me last year which meant sometimes they would appear two months after the flights credited. This means you often have to go through your statement with a fine tooth comb to work out what constitutes the 25% mileage bonus and what constitutes the 55K bonus. Overall not the best of situations.