I just started, right now I'm on about 750-1g of test a week so I'm taking 2.5mg, I've heard that 1mg is enough to block the enzyme responsible for aromatose and then you can use as much test as you want. But just to be safe I'll be on 2.5 ED while on. Following that I'll be on 1.25 ED (1/4 of a proscar).
I don't think I'll ever stop finasteride after this... need to keep what I got!
As for nandrolones (deca, tren, etc) and finasteride, don't mix them! DHN is way more harsh on your hair but has a very low affinity for the hair receptor than DHT which is why people don't notice hair probs on them (well some people do)... basically, blocking the DHT from binding to available receptors will allow the DHN to bind and fuck you up good
hope it helps, if i'm wrong someone correct me