If you're deciding between 1-AD and 4-AD definitely go with the 4. 4-AD converts into testosterone, 1-AD converts into 1-testosterone, two different compounds. I'm not sure why you're so worried about the aromatization, it's just a fact of life - test aromatizes. Everyone out there running regular AAS runs a test base, and they all run an AI alongside the test to prevent any high estrogen related sides, it's no big deal at all. On top of that, the dose of test you actually get from 4-Andro after all the conversions is so low that I would be amazed if you actually had enough in you to cause any noticeable side effects. You need to dose the stuff at 4-6+ caps daily to even get it working enough to be noticeable at all in a good way, forget having side effects pop up.
Running a DHT derivative is fine too, Epiandro from IML seems to get good reviews, dosing for that is generally 400-800mg daily, although IML dosed theirs pretty low and people seem to run it more in the 200-400mg range.