i dont think you will go bald in a 4 week cycle of epistane.. and also i bet the finastride would make the cycle even less effective than it already is.
i couldnt tell you numbers man. finastride blocks dht to a degree so if any of epistanes effects are through dht than they will be lessend.
if your worried about hair loss, try Hdrol instead, theres excellent logs al lvoer this site on it.
sorry, Mdrol is also already reduced so propecia would have no effect, good thing is Mdrol is not known for causing any hair loss.
So Mdrol would better than havoc/epi if you are worried about hairloss.
Epi is not even an option if you are worried about keeping your hair. Epi is one of the worst for the hair line. Stick to MDrol, or Hdrol. These are the safest and multiple people prone to balding on here can attest to that.