I would say NW1.5 or NW2, not sure though. It depends, if you want to regrow or just maintain what you have. The problem with minoxidil is that it can be a real hassle to apply everyday for twice a day. If I were you, I would just use finasteride. But I recommend you read about both minoxidil and finasteride to see which are more willing to do. The thing with minoxidil/rogaine is that it does not stop you from balding, it doesn't have any effect on DHT, therefore you will continue to bald. minoxidil will only hold off your hairloss for maybe a few years. Finasteride will actually fight male pattern baldness at the root problem and inhibit DHT. Like I said, If I were you I would use finasteride just to maintain what you have and if you are lucky, you will get a bit of regrowth, but I wouldn't count on regrowth.