I must have missed this question.
Much will depend on the patient´s preference, as the majority of patients are no longer open to the idea of FUT surgery, due to the linear scarring and more downtime and recovery post surgery.
If the patient was open to either technique, Dr. Bisanga would consider donor density, scalp laxity, patient´s age, pattern of loss, predicted future loss, medical regimen amongst other factors.
To summarise, if the patient presented a donor area that based on all data, could provide the appropriate graft demands for this surgery (2500 - 3000 grafts as you have said), and was able to provide a further x amount of grafts that would likely be sufficient to meet future demands, then in most cases there may not be the need to consider FUT.
I think it is agreed that if FUE could support all graft demands of a particular patient, then this would be the preferred approach over FUT.
Unfortunately, nobody is able to accurately and specifically predict final pattern of loss in all patients, especially considering that external factors such as lifestyle, health, smoking, diet, stress, medication etc may also have influence in some patients.