I'm staying with the 6 week cycle, I'm just running it a higher dosage. I read some logs on anabolic minds where some people got poor results at 400mg and suggested to run it higher (600+). The main thing I'm afraid of is the suppression more than anything (which is why I'm not going over 6 weeks), but as of right now my sac is hanging looser than ever just like prefin.
I'm also running 3 tablespoon of pine pollen powder a day along with the usual herb cycling method.
According to your first theory about DHT and 5AR enzymes, I'm planning to run it higher at dosages just to fit that lol. So higher DHT (higher dosage) = higher increase in 5AR. Money is not an issue so I have no worries with it lol.