HST(hematopoietic stemcell transplant) is an option for treating aplastic anemia. But decision to go for a transplant depends on several factors. Matched donor is one such factor in allogeneic transplant. Repeated blood transfusion before transplant increases failure chance. Although young patients like you are good candidate for transplant the decision entirety depends on individual situation. Recently various research have shown chromosomal structure(telomere) also has an impact on outcome of the therapy chosen. So it is complex decision. If iwere your treating physician I would have suggested you to consult a haematologist for best judgment. Wish you good health.