I have never used Tren, but the prevailing ideology I have seen is for dieting/recomping you want to keep test low/near replacement and just lean on the Tren to do the anabolic work (like 200 test and X amount of Tren based on your experience level with it). If bulking or for strength, higher test like that would be the route - but that is where sides and gyno risk will be highest/toughest to control.
Pramiplexole can be used in lieu of Caber, but prami sucks eggs and Caber is awesome. Many folks can just get away with a product like P5P or Inhibit P twice a day, but if you are sensitive or doses are higher you will probably need something like prami, caber, or bromocriptine. Using DHT-based drugs like Anavar or Masteron tend to help prevent gyno somewhat both from estrogen and even prolactin to varying degrees, but that’s another topic.