You are very young, and based on your picture it seems not just to be the frontal region which already have a high degree of hairloss for your age, but also midscalp seems to be affected. You will need to monitor if finasteride completely pauses your hairloss for a longer period or only slow it down as it does for many. For many men hairloss is most aggressive untill their mid 30s, which if is the case with you, might mean you dont have enough donor available to correct it later on. Likewise as you get older, it will be more easy to predict your final NW pattern and a surgeon will be able to tailor a longterm plan for you on how to manage your donor capability to the best extend so it will also look good as you age.