DaMan, my advice for using Finasteride is toward ones who are prone to MPB, and if they are on Finasteride, it's pretty much a decision for the rest of their life.
If you are not prone to hairloss, it might be a good idea, not to use Finasteride at all. Don't forget that convertion to DHT is very beneficial in building strength and muscles, also, look at heavy steroid users who are not prone to hairloss, they keep their hair. You might be one of the lucky ones.
Anyway, it's a very individual thing, so keep an eye on your hairline, while experimenting.
If you are not prone to hairloss, it might be a good idea, not to use Finasteride at all. Don't forget that convertion to DHT is very beneficial in building strength and muscles, also, look at heavy steroid users who are not prone to hairloss, they keep their hair. You might be one of the lucky ones.
Anyway, it's a very individual thing, so keep an eye on your hairline, while experimenting.