Since you don't have much time to train, your heaviest training week will be about 13 hours. You are an experienced triathlete. You have completed sprint and Olympic-distance races. Life, however, has your clock in a stranglehold and training time is at a premium. Before beginning this plan, you are capable of swimming three times per week, around an hour each time.
Cycling currently includes being able to comfortably go an hour and a half or so.
Up to this point, you've been training around eight to 10 hours each week, which is very comfortable. Your typical training week is fairly light during the week, due to a long list of commitments. However, weekends are open for longer training hours. You need at least one day completely free from training each week because it keeps you healthy and in good spirits. If this athlete profile fits you, your estimated completion time for an Ironman-distance race is between 12 and 14 hours.